The Conversation (0)
Warriedar Resources Limited (ASX: WA8) (Warriedar or the Company) is pleased to provide an update on drilling progress and release the first results from diamond drilling undertaken at the Ricciardo deposit within its Golden Range Project, located in the Murchison region of Western Australia (Figure 1).
HIGHLIGHTS:
- Next phase of drilling activities progressing strongly at Ricciardo and M1.
- Approximately 5,030m RC (29 holes) and 1,420m diamond drilling (16 holes) completed to date.
- The first diamond drilling undertaken at the 2.3km long Ricciardo deposit by any operator in ten years.
- Assay results returned for the first four (4) diamond tails (255m) of the program at Ricciardo have seen all holes intersect significant gold intervals, including:
- 19m @ 4.94 g/t Au from 188m (RDRC039 DD) * includes contiguous final RC result of 4m @ 14.49 g/t from 188m
- 12m @ 6.98 g/t Au from 110m (RDRC040 DD) inc. 3m @ 22.12 g/t Au from 112m
- 16m @ 2.30 g/t Au from 243m (RDRC055 DD) inc. 6m @ 3.13 g/t Au from 252m
- 17m @ 2.38 g/t Au from 264m (RDRC055 DD) inc. 8m @ 4.03 g/t Au from 273m
- Delivers further high-grade extensional success to existing Mineral Resource Estimate (MRE) model below the Silverstone North pit (Holes 40, 55) and infill confidence to MRE below northern end of the Ardmore pit (Hole 39).
- These outcomes build on the growth in high-grade deposit margins delivered at Ricciardo from the significant RC program executed earlier this year.
- Ricciardo sits in the middle of the 25km-long ‘Golden Corridor’ at Golden Range, which hosts six discrete deposits (18 historic pits) that are all open at depth and possess immediate growth potential.
- The ‘Golden Corridor’ is Warriedar’s key exploration focus in 2024.
This is the first diamond drill program at Ricciardo since 2014, when just three (3) diamond holes were drilled by the previous operator.
The results reported in this release are for four (4) (255m) of the 16 (1420m) diamond holes drilled to date. Approximately 2,200m of diamond drilling is planned as part of the current phase of combined RC and diamond drilling at Ricciardo and M1.
The results from these initial four diamond holes extend the high-grade shoot below the Silverstone North pit and infill a previous gap in the high-grade zone of the MRE below the northern part of the Ardmore pit (adding confidence and continuity to the MRE in this area).
These outcomes, while stemming from only a small part of the overall current phase of drilling, continues to demonstrate the outstanding MRE growth potential that exists at Ricciardo and along the broader ‘Golden Corridor’ trend.
Figure 1: The Golden Range and Fields Find Projects Mines and projects within trucking distance of the Warriedar tenure are shown. The location of the Ricciardo deposit within the 25km-long ‘Golden Corridor’ at the Golden Range Project is annotated
The Ricciardo gold system (within the Golden Range Project) spans a strike length of approximately 2.3km, with very limited drilling having been undertaken below 100m depth. Ricciardo possesses a current Mineral Resource Estimate (MRE) of 8.7 Mt @ 1.7 g/t Au for 476 koz gold.1 The oxide material at Ricciardo has been mined by previous operators.
Click here for the full ASX Release
This article includes content from Warriedar Resources Limited, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
WA8:AU
Targeted Exploration Focus Delivers an Additional 471koz or 99% Increase in Ounces, and a Higher Grade for Ricciardo
HIGHLIGHTS:
- Updated Mineral Resource Estimate (MRE) for the Ricciardo Deposit (part of the broader Golden Range Project) of 16.44 Mt @ 1.8 g/t Au for 947.5 koz gold.
- Represents a 99% increase in Ricciardo MRE contained gold ounces.
- Proven high-returning exploration with the increased Ricciardo MRE ounces delivered at an attractive all-in discovery cost of only approx. A$16/oz.
- High-quality resource additions given drilling focus on high-grade growth ounces with strong commercial potential.
- The updated Ricciardo MRE comprises:
- 467.5 koz @ 1.6 g/t Au open-pit gold Resource (75% M&I) (optimised pit shell constrained at A$3,300/oz)
- 480.0 koz @ 2.0 g/t Au underground gold Resource
- Critically, the Ricciardo system remains wide open at depth and along strike.
- Total Golden Range Project Mineral Resources now stand at over 1.28 Moz gold, a 58% increase from the previous level.
- This initial outcome validates the excellent potential for further growth within the broader 25km ‘Golden Corridor’ via the ongoing, simple strategy of targeting fresh rock extensions under shallow existing pits.
- RC drilling at the southern end of the ‘Golden Corridor’ targeting high-grade Resource growth is progressing well; 9 holes completed for 1,472 metres to date, assays pending.
Warriedar Managing Director and CEO, Amanda Buckingham, commented:
“This is the result we have been working towards all year. With less than 15,000m of targeted, efficient drilling we have added over 470 koz to the Ricciardo deposit, doubling the Resource.
We are excited by both the outcome itself, and the outlook that it delivers us for the wider corridor of gold deposits. The simple strategy of drilling below shallow open pits to find mineable ounces worked exceptionally well for our producing neighbours. The validity of this strategy is now beyond doubt, for us.
Not only is the Ricciardo system still wide open down-plunge, but the entire 25km long ‘Golden Corridor’ offers similar potential upside from such a relatively simple drilling focus.
In the middle of the infrastructure-rich southern Murchison, and located on existing Mining Leases, the opportunity in front of us is utterly irresistible.”
The Ricciardo Deposit
The Ricciardo Gold Deposit is located on existing mining leases 100% owned by WA8, in the Murchison Region, approximately 300 km east of Geraldton, and 420 km by road north-northeast of Perth. Sitting approximately 8km South of the Golden Range Mill on M59/421, and M59/458, within the Golden Range group of historic open pit mines and deposits.
Discovered in the 1990’s, open pit mining of the oxide resources commenced in 2001, and the plant entered Care & Maintenance twice (between July 2004 and 2009, and May 2010 to mid- 2013). Production was over 300 Koz before finally going into ongoing Care and Maintenance in August 2019.
The Ricciardo deposit is located 90km north of Capricorn Metals’ Mt Gibson Gold Project, 8kms south of the Company’s plant, 26km from the neighbouring Golden Grove processing facility and 40 km northeast of Vault Minerals’ high grade Rothsay gold mine (Figure 1).
Figure 1: The location of the Ricciardo gold deposit within the Golden Range Project; within the broader Southern Murchison region.
The Ricciardo gold system spans a strike length of approximately 2.3km, with very limited drilling having been undertaken below 100m depth prior to Warriedar drilling. Historical mining operations at Ricciardo were primarily focused on oxide material, with the transition and primary sulphides mineralisation not systematically explored.
Warriedar’s drilling of Ricciardo during CY2024 achieved excellent results, demonstrating high- grade extensions to the resource. The results demonstrated that the previously quantified resource is part of a much larger system.
Warriedar engaged independent mining consultants, Measured Group to update the Ricciardo MRE, previously reported 476Koz gold.1
The Ricciardo Gold Deposit consists of six semi-continuous historical open pit mines along the 2.3 km arcuate stretch of the Mougooderra Shear Zone, running north to south. These mines are named (from north to south) Silverstone North, Ardmore, Copse, Silverstone, Silverstone South, and Eastern Creek (Figure 2).
Figure 2: Drilling carried out by the Company during 2023 & 2024, which was used to update the MRE.
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This article includes content from Warriedar Resources Limited, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Continued Delivery of High Grade Antimony Mineralisation at Ricciardo
HIGHLIGHTS:
- Review of the antimony (Sb) potential at Ricciardo is complete with drillhole assay data confirming Sb mineralisation of significant thickness and grade exists below both the Ardmore pit (previously identified) and the Copse-Silverstone pits (newly identified), representing a potential combined strike length of approx. 1km.
- Multiple significant Sb intervals have been identified (reviewing both historic and WA8 drill hole assays), in addition to results recently released (* indicated below):
- Most of the Sb mineralisation appears to be located above the main gold zone, a distinct metallurgical positive for future processing and economic potential. Similarly to the gold mineralisation, the Sb zones remain wide open at depth.
- Only 11% of historical drill samples at Ricciardo were assayed for Sb. Retained pulp samples from historical holes are currently being tested with pXRF, with those favourable for significant Sb set to undergo laboratory multi element assay.
- An approx. 100kg high-grade sample of antimony mineralisation from Ricciardo has also been dispatched for scoping-level metallurgical testwork.
Warriedar Managing Director and CEO, Amanda Buckingham, commented:
“Following the recent high grade antimony intersections at Ricciardo, our initial review of the broader antimony potential has delivered further promise. An exceptionally high-grade antimony interval, as well as a much wider intersection, are now able to be placed in greater context. This context is a broader volume of antimony, not yet well-defined but with existing drilling showing serious scale and grade potential.
“Importantly, the high-grade antimony appears relatively discrete from higher-grade gold mineralisation, an excellent metallurgical outcome. While it remains early days, we are cautiously optimistic and have commenced initial metallurgical testing for potential processing and antimony recovery.
“While we are excited about this emerging opportunity at Ricciardo, I want to emphasise however that pursuit of this opportunity will be in parallel with our growth-focussed gold drilling at Golden Range, which remains our current core focus.”
Figure 1: The Golden Range and Fields Find Projects, with proximate mines, mills and projects.
Key Ricciardo context
The Ricciardo gold system spans a strike length of approximately 2.3km, with very limited drilling having been undertaken below 100m depth. Ricciardo possesses a current Mineral Resource Estimate (MRE) of 8.7 Mt @ 1.7 g/t Au for 476 koz gold.1
Historical gold mining operations at Ricciardo were primarily focused on the oxide material, with the transition and primary sulphides mineralisation not systematically explored. Antimony was not a focus of previous exploration, with only about 11% of historic drill holes assayed for antimony.
The gold and antimony mineralisation at Ricciardo is predominantly hosted within intensely altered and deformed ultramafic units. The high-grade antimony-dominant mineralisation occurred later than the main gold events and generally sits above the high-grade gold mineralisation.
Click here for the full ASX Release
This article includes content from Warriedar Resources, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Further Strong Extensional Diamond Drill Results from Ricciardo
HIGHLIGHTS:
- All residual assay results received from the recent 2,701m (27 holes) diamond drilling program at Ricciardo.
- Drilling underneath the Silverstone pit confirms the identified high-grade shoot continues at depth and at better than previously modelled grades:
- 13.7m @ 3.27 g/t Au and 0.36% Sb (4.04 g/t AuEq) from 253.3m, inc.
1.2m @ 9.00 g/t Au and 0.00% Sb (9.00 g/t AuEq) from 264.85m (RDRC046) - 22.6m @ 2.11 g/t Au and 0.29% Sb (2.71 g/t AuEq) from 294m, inc.
3m @ 7.22 g/t Au and 0.02 % Sb (7.26 g/t AuEq) from 312m (RDRC044)
- 13.7m @ 3.27 g/t Au and 0.36% Sb (4.04 g/t AuEq) from 253.3m, inc.
- Drilling from the Eastern Creek area, located at the southern end of Ricciardo, confirms down dip continuity with increasing grade and width at depth:
- 7.0m @ 2.54 g/t Au and 0.24% Sb (3.05 g/t AuEq) from 170m (RDRC060)
- 25.0m @ 1.23 g/t Au and 0.17% Sb (1.60 g/t AuEq) from 232m, inc.
6.8m @ 2.37 g/t Au and 0.37% Sb (3.16 g/t AuEq) from 250.2m (RDRC059)
- Update of Ricciardo Mineral Resource Estimate (MRE) on track for Q4 2024.
- Aircore drilling program now in progress at the Golden Range Project targeting an underexplored section at the southern end of the 70-km long shear.
- Further growth-focussed Reverse Circulation (RC) drilling of the ‘Golden Corridor’ scheduled to commence in November.
The assays reported in this release are full results for the final 11 diamond holes (1,021m) from the recent 27-hole diamond tail program at Ricciardo. Results for the first 16 holes of this program have previously been reported (refer WA8 ASX releases dated 3 July 2024, 19 July 2024, 2 August 2024 and 26 August 2024).
Warriedar Managing Director and CEO, Amanda Buckingham, commented:
“This final set of diamond results from the recent Ricciardo drilling have really put a bow on the whole program for us. The broad-based extensional success delivered by this drilling is both real and exciting. The fact that these results are being delivered at what are still relatively shallow down-dip depths, and in such proximity to excellent surrounding infrastructure, also delivers excellent potential for the economic character of the anticipated resource additions at Ricciardo. It is my firm belief that we are just getting started in terms of the opportunity at Ricciardo, let alone within the larger ‘Golden Corridor’ and along the broader mineralised shear.”
Key Ricciardo context
The Ricciardo gold system is located within Warriedar’s flagship Golden Range Project in the Murchison region of Western Australia (refer Figures 1 and 2).
Ricciardo spans a strike length of approximately 2.3km, with very limited drilling having been undertaken below 100m depth. It possesses a current MRE of 8.7 Mt @ 1.7 g/t Au for 476 koz gold. 1 Importantly, historical mining operations at Ricciardo were primarily focused on oxide material, with the transition and primary sulphides mineralisation not systematically explored.
Figure 1: The Golden Range and Fields Find Projects, with proximate mines, mills and projects.
Figure 2: The ‘Golden Corridor’ within the Golden Range Project. The image on the right is gravity over shaded residualmagnetic RTP.
The most recent phase of RC and diamond drilling of Ricciardo has concluded. This release reports on the assays from the final 11 holes of the diamond program. These holes were predominantly located in the southern part of the Ricciardo deposit, focusing on down-dip extension where no previous drilling had been undertaken (refer Table 1 and Figure 3 for drill collar and relevant section locations).
All 11 holes returned significant intersections, delivering a further round of meaningful extensional success from the recent program (refer Table 2). All results are set to be incorporated into an update of the Ricciardo MRE, which remains on track for completion during Q4 2024.
Click here for the full ASX Release
This article includes content from Warriedar Resources, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Further Step-Out Gold Success and High-Grade Antimony Discovery
HIGHLIGHTS:
- Assay results received for a further 1,102m of diamond drilling at Ricciardo.
- Extremely high-grade antimony (Sb) intersected in multiple holes below the Ardmore pit, including in RDRC067 above the main zone of high-grade gold mineralisation:
- 12.7m @ 4.98% Sb and 0.36 g/t Au (10.92 g/t AuEq*) from 229.2m
incl. 1.85m @ 28.50% Sb and 0.45 g/t Au (60.94 g/t AuEq) from 238.25m
- 12.7m @ 4.98% Sb and 0.36 g/t Au (10.92 g/t AuEq*) from 229.2m
- A wide zone of antimony mineralisation was encountered in hole RDRC001:
- 34m @ 1.0% Sb and 0.59 g/t Au (2.72 g/t AuEq) from 158.80m
- This newly identified and exceptionally high-grade Sb zone, along with the broader antimony potential at Ricciardo, demands prompt follow-up and evaluation.
- Further high-grade gold extension delivered below the Ardmore pit:
- 18m @ 3.41 g/t Au and 0.27% Sb (3.97 g/t AuEq) from 276m (RDRC048B) incl. 4.5m @ 9.90 g/t Au and 0.01% Sb (9.93 g/t AuEq) from 286.5m
- 1m @ 28.31 g/t Au and 2.18% Sb (32.92 g/t AuEq) from 286m (NMRC005)
- 42.6m @ 1.08 g/t Au and 0.05% Sb (1.17 g/t AuEq) from 253.38m (RDRC067)
- ‘Golden Corridor’ diamond drilling now complete, with 31 holes drilled for 3,300m.
- All residual diamond assays expected to be received by late September, with update of the Ricciardo Mineral Resource targeted for Q4 2024.
- Further growth-focussed RC drilling of the ‘Golden Corridor’ scheduled for H2 2024, as well as planned aircore drilling along select parts of the regional shear.
Warriedar Managing Director and CEO, Amanda Buckingham, commented:
“The results for these holes successfully demonstrate further extensional high-grade gold, and for the first time very high-grade antimony zones below the Ardmore pit area.
Given the relative absence of assaying for antimony in historical drilling at Golden Range, we are cautiously optimistic on the potential that might exist here. Moreover, the apparent zonation in RDRC067 is also highly encouraging for any future antimony development potential.
I want to emphasise however that pursuit of this opportunity will be in parallel with our growth-focussed gold drilling at Golden Range, which remains our current core focus.”
* Refer to page 8 of this release for full gold equivalent (AuEq) calculation methodology.
Figure 1: The Golden Range and Fields Find Projects, with proximate mines, mills and projects.
Key Ricciardo context
The Ricciardo gold system spans a strike length of approximately 2.3km, with very limited drilling having been undertaken below 100m depth. Ricciardo possesses a current MRE of 8.7 Mt @ 1.7 g/t Au for 476 koz gold.1 Historical mining operations at Ricciardo were primarily focused on oxide material, with the transition and primary sulphides mineralisation not systematically explored.
Due to the limited number of multi-element assays from historical drill holes at Ricciardo, other mineral potential (outside of gold) has also not been properly evaluated historically.
Figure 2: The ‘Golden Corridor’ within the Golden Range Project. The image on the right is gravity over shaded residual magnetic RTP.
The gold mineralisation at Ricciardo is predominantly hosted with intensified altered and deformed ultramafic units. It is important to note that the newly identified antimony-dominant mineralisation identified in RDRC067 (discussed below) sits above high-grade gold mineralisation in the same area, and may overprint the earlier gold mineralisation in some areas.
High-grade antimony zone discovery below the Ardmore pit
RDRC067 was designed to drill south to north along strike to better understand the structural controls within the Ricciardo deposit and assess the continuity of the ultramafic unit (Figure 3). All previous drill holes (by Warriedar and previous explorers) have been drilled eastward perpendicular to the known mineralised structure. RDRC067 was considered an important hole by the Warriedar technical team in order to confirm there are no additional structural controls and to provide further confidence in the geological model.
Figure 3: Plan view of Ricciardo deposit with current cross section locations annotated. The holes drilled in Q2/Q3 as part of the current program are highlighted in red. Additional holes are also outlined but not presented in below cross sections.
Unexpectedly, RDRC067 intersected significant high-grade antimony mineralisation from 229.2m to 241.9m downhole, returning 12.7m @ 4.98% Sb and 0.36 g/t Au (10.92 g/t AuEq) (Figure 4). Above this high-grade antimony zone, another significant zone was also identified from 183m to 198.1m downhole, returning 15.1m @ 1.42% Sb and 0.42 g/t Au (3.42 g/t AuEq) (Figure 4).
The antimony zones intersected by RDRC067 are interpreted to correlate with a lower grade antimony zone intersected in RDRC038 and RDRC049 (Figure 4). Encouragingly, drillhole RDRC001 returned a wide zone of antimony mineralisation: 34m @ 1.0% Sb and 0.59 g/t Au (2.72 g/t AuEq). Further work is required to determine the geometry and extent of the antimony mineralisation.
RDRC067 concluded at 296.96m downhole depth, within the gold mineralisation domain, as the target depth of the hole had been reached. As RDRC067 is not drilled perpendicular to the Mougooderra Shear, which is the main control of the mineralisation, it is important to note that the intersected thickness does not reflect the true thickness of the mineralisation.
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This article includes content from Warriedar Resources, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Infill Drilling of Ricciardo Deposit Delivers Significant Gold Mineralisation
HIGHLIGHTS:
- Assay results for a further two (2) diamond tails at Ricciardo confirm a 77m wide (not true width) mineralisation zone 180m down-dip of the current Resource beneath the Ardmore pit, including a high-grade shoot.
- Significant gold intervals include:
- 7.2m @ 4.51 g/t Au from 232.8m, incl. 3m @ 9.03 g/t Au from 234m
- 10.5m @ 1.53 g/t Au from 218.8m
- 3.9m @ 3.35 g/t Au from 218.8m
- 23.2m @ 1.60 g/t Au from 270.8m
- Mineralisation in this area is structurally complex, extends to a vertical depth of ~ 460m and remains open.
- Ricciardo sits in the middle of the 25km-long ‘Golden Corridor’ at Golden Range, which hosts six (6) discrete deposits (18 historic pits) that are all open at depth and possess immediate growth potential.
- Current diamond drilling program (now extended to 3,000m) at Ricciardo and M1 set to be completed in mid-August, with all assays expected by late-September.
- Update of the Ricciardo MRE is targeted for Q4 2024.
- Further growth-focussed drilling of the ‘Golden Corridor’ scheduled for H2 2024.
The results reported in this release are for a further two (2) of the diamond holes drilled in the current program. Results for the first twelve (12) diamond holes of the current program were previously reported (refer WA8 ASX releases dated 3 July 2024 and 19 July 2024).
The results for these two (2) holes again demonstrate wide infill of the broader Ricciardo deposit at depth, further validating the outstanding Mineral Resource Estimate (MRE) growth potential that exists at Ricciardo and along the broader ‘Golden Corridor’ trend (refer Figure 2).
Warriedar Managing Director and CEO, Amanda Buckingham, commented:
“The outcomes of these two diamond tails are significant, given that they represented substantial depth step-outs under the shallow Ardmore pit. A 77m wide mineralised zone (downhole) with a central high-grade shoot (4.51 g/t), 180m below the MRE is a great result. We don’t fully understand the structural geometry here yet, but we are delighted that the deeper part of hole 49 validates the drill results from a previous explorer – confirming the deposit extends to about 460m vertical depth and retains some good grade (3.19 g/t). Excellent progress.
We continue to drill ahead at Ricciardo as part of the current diamond program, with follow-up growth drilling activities in planning for the remainder of H2 2024.”
Figure 1: The Golden Range and Fields Find Projects. Mines and projects within trucking distance of the Warriedar tenure are shown.
Ricciardo deposit
The Ricciardo gold system spans a strike length of approximately 2.3km, with very limited drilling having been undertaken below 100m depth. Ricciardo possesses a current MRE of 8.7 Mt @ 1.7 g/t Au for 476 koz gold.1 The oxide material at Ricciardo has been mined by previous operators.
Click here for the full ASX Release
This article includes content from Warriedar Resources, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Lahontan Gold Announces Positive Preliminary Economic Assessment for Santa Fe
Lahontan Gold Corp. (TSXV:LG)(OTCQB:LGCXF)(the "Company" or "Lahontan") is pleased to announce results from a positive Preliminary Economic Assessment(" PEA") on its flagship Santa Fe Mine gold-silver project located in Nevada's prolific Walker Lane Trend. The PEA was prepared by Kappes, Cassiday & Associates ("KCA") of Reno, Nevada with mine planning and production scheduling contributions from RESPEC Company LLC ("Respec"), Reno, Nevada and mineral resource estimation by Equity Exploration Consultants Ltd. ("Equity"), of Vancouver, British Columbia, in accordance with Canadian National Instrument 43-101, Standards of Disclosure for Mineral Projects ("NI 43-101").
PEA Highlights:
- Pre-tax Net Present Value at a 5% discount rate ("NPV5") of US$265.1 M with a 41.0% IRRwith an After-tax NPV5 of US$200.0 M with a 34.2% IRR utilizing a $2,705/oz gold price and a $32.60/oz silver price ("spot metal prices") (see spot metal price to base case metal price comparison in Table 1).
- Total Life-of-Mine ("LOM") Pre-tax net cash flow of US$373.3 M and After-tax net cash flow of US$288.9 M over a nine-year project life using spot metal prices.
- Total projected LOM revenue of US$930.8 M over a nine-year project life using spot metal prices.
- LOM strip ratio of only 1.54 (waste to mineralized material ratio).
- Estimated pre-production capital costs of US$135.1 M including a 20% contingency, with a payback of 2.9 years using spot metal prices.
Kimberly Ann, Lahontan Gold Corp Executive Chair, CEO, President, and Founder commented: "Lahontan is very excited about the results of the PEA: a low-capex, highly profitable mining project with a quick payback certainly bodes well for the future of Lahontan and all stakeholders. There is considerable potential to expand gold and silver resources, therefore this is just the first step in restarting mining operations at Santa Fe. With mine permitting well under-way, targeting a 2026 mine ground-breaking, the potential for the Company to realize the economic outcomes outlined in the PEA is very real, especially given current trends in gold and silver prices. Continued optimization of the mine plan, resource expansion drilling, and refining the metallurgical flow sheet are planned for 2025, in parallel with our permitting activities."
The PEA is preliminary in nature, includes Inferred Mineral Resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as Mineral Reserves, and there is no certainty that the PEA will be realized. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. The Company has not defined any Mineral Reserves at the Santa Fe Mine project.
Economic Sensitivities
Sensitivity of the project economics to metals prices is shown in Table 1, showing the base case metal prices used for the PEA, as well as a low case, a high case and the spot case.
Table 1: Santa Fe Project 2024 PEA Economics
Low Case | Base Case | High Case | Spot Case (1) | |
Gold Price (US$/oz) | 1,800 | 2,025 | 2,200 | 2,705 |
Silver Price (US$/oz) | 21.50 | 24.20 | 26.3 | 32.60 |
Net Revenue (US$) | 618.6 M | 696.2 M | 756.5 M | 930.8 M |
Pre-Tax NCF(2) (US$) | 65.0 M | 141.6 M | 201.2 M | 373.3 M |
Pre-Tax NPV5(3) (US$) | 21.7 M | 82.2 M | 129.2 M | 265.1 M |
Pre-Tax IRR(4) | 8.5% | 17.4% | 23.9% | 41.0% |
After-Tax NCF(2) (US$) | 47.8 M | 107.7 M | 154.1 M | 288.9 M |
After-Tax NPV5(3) (US$) | 8.7 M | 56.5 M | 93.3 M | 200.0 M |
After-Tax IRR(4) | 6.4% | 14.0% | 19.5% | 34.2% |
Payback Period(5) (years) | 5.1 | 4.2 | 3.8 | 2.9 |
(1) As of December 10, 2024
(2) NCF means net cash flow
(3) NPV5 refers to net present value at 5% discount rate
(4) IRR means internal rate of return
(5) Pre-production capital, excluding sustaining capital
Capital Costs
Capital costs for the project are summarized in Table 2. Capital costs associated with the mining operation were estimated by RESPEC and based on mining by contractor. Pre-stripping costs were based on the operating costs discussed below. Capital costs associated with processing such as crushing, heap leaching and metal recovery, along with support and infrastructure costs associated with laboratory, water and power distribution and general site services were estimated by KCA. Reclamation and closure costs of $12.5 M were estimated by KCA.
Table 2: Project Capital Costs
Pre-Production (US$ M) | LOM Sustaining (US$ M) | |
Mining | 2.5 | 0.8 |
Processing, Support & Infrastructure | 116.0 | 17.0 |
Owner's Costs | 5.3 | 0.0 |
Initial Fills | 0.5 | 0.0 |
Working Capital(1) | 10.7 | 0.0 |
TOTAL(2) | 135.1 | 17.8 |
- Working capital is credited in Year 9
- Values are rounded and may not sum perfectly
Operating Costs
Operating costs for the project are summarized in Table 3. Mining operating costs were estimated by RESPEC and based on estimated anticipated equipment hours and personnel requirements at a 25% markup for contractor rates. The off-road red-dye diesel fuel price in this estimate was assumed to be $0.74/L. All other operating costs were estimated by KCA and based on first principles on certain components where possible, such as reagent and power consumption, along with benchmarking with similar operations for other components, such as labor, maintenance and discretionary expenses
Table 3: Project Operating Costs
LOM Total (US$ M) | Per Tonne Processed ($/t) | |
Mining | 204.2 | 7.36 |
Processing | 138.7 | 5.00 |
Support & Infrastructure | 17.3 | 0.62 |
G&A | 35.8 | 1.29 |
TOTAL(1) | 402.5 | 14.28 |
(1) Values are rounded and may not sum perfectly
Mine Production Schedule
The PEA mine production schedule includes mining of leach material and waste for the Santa Fe, Calvada, Slab, and York deposits. Leach material was assumed to be sent to a centralized crushing plant and then stacked on a leach pad and the waste material was sent to designed waste rock storage facilities (WRSF) or used as partial backfill into the Calvada pit.
Because the Santa Fe Mine is a brown-field project, minimal pre-stripping is required to develop sufficient stockpiles to feed the crusher. The mine production schedule requires 2 months of preproduction which begins in the Santa Fe deposit. The Calvada deposit is started in year 2 and mined concurrently with Santa Fe. Calvada mining is followed by mining of Slab and York deposits.
The process schedule was developed with a ramp up of production from year 1 through year 3 to a full 4.56 million tonnes per year. Table 4 shows the process production schedule.
Table 4: Projected Production Summary
Year | Tonnes Processed (kt) | Gold Grade (g/t) | Silver Grade (g/t) | Gold Produced (koz) | Silver Produced (koz) | Gold Equivalent Produced(1) (koz) |
1 | 3,468 | 0.47 | 4.1 | 30.3 | 88.1 | 31.4 |
2 | 4,517 | 0.58 | 4.6 | 51.4 | 168.9 | 53.4 |
3 | 4,563 | 0.66 | 3.7 | 60.2 | 155.7 | 62.0 |
4 | 4,563 | 0.70 | 3.0 | 60.5 | 124.2 | 62.0 |
5 | 4,563 | 0.73 | 2.5 | 62.0 | 93.5 | 63.1 |
6 | 4,563 | 0.61 | 2.2 | 49.9 | 56.9 | 50.5 |
7 | 1,497 | 0.58 | 2.1 | 20.1 | 23.1 | 20.4 |
8(2) | 0 | 2.3 | 4.2 | 2.3 | ||
TOTAL(3) | 27,731 | 0.63 | 3.3 | 336.7 | 714.7 | 345.2 |
- Equivalent gold calculation is based on base case metal prices
- Residual leaching production only
- Values are rounded and may not sum perfectly
Table 5 shows the key production parameters for the mine and processing units used in the generation of the production and cash flow profiles.
Table 5: Key Mining and Processing Production Parameters
LOM | |
Mining | |
Total Waste Tonnes Mined (Mt) | 42.9 |
Total Processed Tonnes Mined (Mt) | 27.7 |
Total Tonnes Mined (Mt) | 70.6 |
Heap Recovery - Gold | |
Santa Fe Oxide | 71% |
Santa Fe Transition | 49% |
Calvada Oxide | 71% |
Calvada Transition | 45% |
Slab Oxide | 50% |
York Oxide | 60% |
York Transition | 45% |
Heap Recovery - Silver | |
Santa Fe Oxide | 30% |
Santa Fe Transition | 30% |
Calvada Oxide | 13% |
Calvada Transition | 0% |
Slab Oxide | 12% |
York Oxide | 0% |
York Transition | 0% |
Mining and Processing
The mineralized material will be mined by standard open-pit mining methods using a contractor-owned and operated mining fleet consisting of 92-tonne haul trucks and 11.5-m3 loading units and transported to the crushing circuit for processing.
Mineralized material from the Santa Fe, Calvada, Slab and York deposits will be processed by conventional heap leaching methods. The nominal processing rate will be 4.6 million tonnes per annum or 12,500 tonnes per day. Three-stage crushing of the material to 12.7 mm, will be followed by conveyor stacking on to a multi-lift heap leach pad. Dilute sodium cyanide solution will be applied to the heap, with the pregnant gold and silver-bearing solution effluent from the heap being processed in a carbon adsorption-desorption-recovery (ADR) plant. Gold and silver will be produced in the form of doré bars from the on-site smelting process.
Mineral Resource Estimation
The mineral resource estimate ("MRE") was prepared in accordance with the CIM Definition Standards and Canadian National Instrument NI-43-101. The effective date of the MRE prepared by Equity is October 9, 2024. The MRE is shown in Table 6.
Table 6: Project-wide Resources, Santa Fe Mine, Mineral County, Nevada
Notes to Table 6:
- Mineral Resources have an effective date of October 9, 2024. The Mineral Resource Estimate for the Santa Fe Mine was prepared by Trevor Rabb, P.Geo., of Equity Exploration Consultants Ltd., an independent Qualified Person as defined by NI 43-101.
- Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. Inferred Resources are considered too speculative geologically to have economic considerations applied to them that would enable them to be classified as Mineral Reserves. An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that most of the Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration.
- Resources are reported in accordance with NI43-101 Standards of Disclosure for Mineral Projects (BCSC, 2016) and the CIM Definition Standards for Mineral Resources and Mineral Reserves (CIM, 2014).
- Mineral Resources were estimated for gold, silver, and gold equivalent (Au Eq) using a combination of ordinary kriging and inverse distance cubed within grade shell domains.
- Mineral resources are reported using a cut-off grade of 0.15 g/t Au Eq for oxide resources and 0.60 g/t Au Eq for non-oxide resources. Au Eq for the purpose of cut-off grade and reporting the Mineral Resources is based on the following assumptions gold price of US$1,950/oz gold, silver price of US$23.50/oz silver, and oxide gold recoveries ranging from 45% to 79%, oxide silver recoveries ranging from 10% to 30%, and non-oxide gold and silver recoveries of 71%, mining costs for resource and waste of US$2.50/t, processing cost (oxide) US$3.49/t, processing cost (non-oxide) US$25/t.
- An optimized open-pit shell was used to constrain the Mineral Resource and was generated using Lerchs-Grossman algorithm utilizing the following parameters: gold price of US$1,950/oz gold, silver price of US$23.50/oz silver, and selling costs of US$29.25/oz gold. Mining costs for resource and waste of US$2.50/t, processing cost (oxide) US$3.49/t, processing cost (non-oxide) US$25/t, G&A cost US$1.06/t. Royalties for the Slab, York and Calvada deposits are 1.25%, and maximum pit slope angles of 50 degrees.
- Totals may not sum due to rounding.
Estimation Approach: Lithology and gold and silver bearing domains were modelled using Leapfrog 2024. These domains are mainly defined by logged jasperoid and limestone-breccia lithologies and continuity of gold grades above 0.1 g/t gold. Metallurgical domains for oxide, transition and non-oxide were modelled based on ratio of cyanide leachable gold assay values to fire assay gold values in addition to drillhole logs recording abundance of pyrite and oxidation intensity. Transition material represents approximately 35% of oxide tonnes and comes almost entirely from the Santa Fe deposit. Transition domain material is included in the oxide resource. Domains representing lithology, weathering and mineralization models were assigned to a block model with a block size of 5 m x 5 m x 6 m. Average bulk densities representative of the mineralization and lithology models were assigned to the block model and vary from 2.4 t/m3 to 2.6 t/m3.
Grade capping and outlier restrictions were applied to gold and silver values and interpolation parameters respectively. Top cut values for gold and silver were evaluated for each domain independently prior to compositing to 1.52 m lengths that honor domain boundaries. Estimation was completed using Micromine Origin with Ordinary Kriging (OK) and Inverse Distance cubed (ID3) interpolants. Blocks were classified in accordance with the 2014 CIM Definition Standards. The nominal drillhole spacing for Indicated Mineral Resources is 50 m or less. The nominal drillhole spacing for Inferred Mineral Resources is 100 m or less.
Prospects for eventual economic extraction were evaluated by performing pit optimization using Lerchs-Grossman algorithm with the following parameters: gold price of US$1,950/oz gold, silver price of US$23.50/oz silver, selling costs of US$29.25/oz gold. Mining costs for resource and waste of US$2.50/t, processing cost (oxide) US$3.49/t, processing cost (non-oxide) US$25/t, G&A cost US$1.06/t. Royalties for the Slab, York and Calvada deposits are 1.25%. Maximum pit slope is 50 degrees. Processing recoveries range from 45% to 79% for oxide, silver recoveries range from 10% to 30% for oxide and non-oxide gold and silver recoveries are 71%.
More information regarding the Santa Fe Mine project's MRE update is included in the NI 43-101 Technical Report titled Santa Fe Project Technical Report with an effective date of October 9, 2024, Report Date: November 27, 2024*.
Qualified Persons
The qualified persons are Kenji Umeno, P.Eng. of Kappes, Cassiday & Associates; Thomas Dyer, P.E. of RESPEC; Trevor Rabb, P.Geo. and Darcy Baker, P.Geo. of Equity Exploration Consultants Ltd. each of whom is an independent "Qualified Person" under NI 43-101. A technical report supporting the results disclosed herein will be published within 45 days. The effective date of the technical report will be December 10, 2024.
About Lahontan Gold Corp.
Lahontan Gold Corp. is a Canadian mine development and mineral exploration company that holds, through its US subsidiaries, four top-tier gold and silver exploration properties in the Walker Lane of mining friendly Nevada. Lahontan's flagship property, the 26.4km2 Santa Fe Mine project, had past production of 356,000 ounces of gold and 784,000 ounces of silver between 1988 and 1995 from open pit mines utilizing heap-leach processing (Nevada Division of Minerals, www.ndomdata.com). The Santa Fe Mine has a Canadian National Instrument 43-101 compliant Indicated Mineral Resource of 1,539,000 oz Au Eq(grading 0.99 g/t Au Eq) and an Inferred Mineral Resource of 411,000 oz Au Eq (grading 0.76 g/t Au Eq), all pit constrained (Au Eq is inclusive of recovery, please see Santa Fe Project Technical Report*). For more information, please visit our website: www.lahontangoldcorp.com
* Please see the Santa Fe Project Technical Report, Authors: Trevor Rabb, P. Geo, Darcy Baker, PhD, P. Geo., and Kenji Umeno, P. Eng., Effective Date: October 9, 2024, Report Date: November 27, 2024. The Technical Report is available on the Company's website and SEDAR+.
On behalf of the Board of Directors
Kimberly Ann
Founder, CEO, President, and Director
FOR FURTHER INFORMATION, PLEASE CONTACT:
Lahontan Gold Corp.
Kimberly Ann
Founder, Chief Executive Officer, President, Director
Phone: 1-530-414-4400
Email: Kimberly.ann@lahontangoldcorp.com
Website: www.lahontangoldcorp.com
Cautionary Note Regarding Forward-Looking Statements:
This news release contains "forward-looking statements" and "forward-looking information" (collectively, "forward-looking statements") within the meaning of Canadian and United States securities legislation, including the United States Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, are forward-looking statements. Forward-Looking statements in this news release relate to, among other things: the Company's strategic plans; the results of the PEA; the economic potential and merits of the Project; the estimated amount and grade of mineral resources at the Project; precious metals prices; the PEA representing a viable development option for the Santa Fe Mine project ("the Project"); the timing and particulars of the development phases as identified in the PEA; estimates with respect to LOM, operating costs, sustaining capital costs, capex, AISC, cash costs, LOM production, processing plant throughput, NPV and after-tax IRR, payback period, production capacity and other metrics; the estimated economic returns from the Project; mining methods and extraction techniques; the exploration potential of the Project and its inclusion in future mining studies.
These forward-looking statements reflect the Company's current views with respect to future events and are necessarily based upon several assumptions that, while considered reasonable by the Company, are inherently subject to significant operational, business, economic and regulatory uncertainties and contingencies. These assumptions include, among other things: conditions in general economic and financial markets; tonnage to be mined and processed; grades and recoveries; prices for silver and gold remaining as estimated; currency exchange rates remaining as estimated; reclamation estimates; reliability of the updated MRE and the assumptions upon which it is based; future operating costs; prices for energy inputs, labor, materials, supplies and services (including transportation); the availability of skilled labor and no labor related disruptions at any of the Company's operations; no unplanned delays or interruptions in scheduled production; performance of available laboratory and other related services; availability of funds; all necessary permits, licenses and regulatory approvals for operations are received in a timely manner; the ability to secure and maintain title and ownership to properties and the surface rights necessary for operations; and the Company's ability to comply with environmental, health and safety laws. The foregoing list of assumptions is not exhaustive.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. Except for statements of historical fact, this news release contains certain "forward-looking information" within the meaning of applicable securities law. Forward-looking information is frequently characterized by words such as "plan", "expect", "project", "intend", "believe", "anticipate", "estimate" and other similar words, or statements that certain events or conditions "may" or "will" occur. Forward-looking statements are based on the opinions and estimates at the date the statements are made and are subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those anticipated in the forward-looking statements including, but not limited to delays or uncertainties with regulatory approvals, including that of the TSXV. There are uncertainties inherent in forward-looking information, including factors beyond the Company's control. The Company undertakes no obligation to update forward-looking information if circumstances or management's estimates or opinions should change except as required by law. The reader is cautioned not to place undue reliance on forward-looking statements. Additional information identifying risks and uncertainties that could affect financial results is contained in the Company's filings with Canadian securities regulators, which filings are available at www.sedar.com
