The Conversation (0)
Astral Resources NL (ASX: AAR) (Astral or the Company) is pleased to report assay results for the first 20 holes for 2,580 metres of a 31-hole (3,834 metre) in-fill and extensional RC drill program at the Kamperman Prospect, part of the 100%-owned Feysville Gold Project (Feysville), located approximately 14km south of Kalgoorlie in Western Australia (Figure 1).
HIGHLIGHTS
- Assay results received for the first 20 holes (2,580 metres) of a 31-hole (3,834 metre) reverse circulation (RC) drill program at Feysville’s Kamperman Prospect, with best results including:
- 12 metres at 7.26g/t Au from 23 metres including 1 metre at 16.5g/t Au from 24 metres and 1 metre at 39.7g/t Au from 27 metres and, further down-hole, 25 metres at 24.3g/t Au from 68 metres, including 1 metre at 28.0g/t Au from 69 metres and 3 metres at 177g/t Au from 74 metres in hole FRC378;
- 12 metres at 1.96g/t Au from 20 metres and 5 metres at 1.25g/t Au from 58 metres in hole FRC377;
- 4 metres at 2.95g/t Au from 61 metres and 11 metres at 0.96g/t Au from 91 metres in hole FRC372; and
- 18 metres at 0.90g/t Au from 25 metres in hole FRC371.
- RC holes FRC377 and FRC378 were designed to in-fill the northern end of the Kamperman prospect while also testing for potential north-plunging mineralisation, as characterised by previous intercepts of 14 metres at 1.44g/t Au from 54 metres in hole FRC304 and 12 metres at 1.99g/t Au from 78 metres in hole FRC341.
- The results from RC holes FRC377 and FRC378 are encouraging, and diamond drilling (DD) is planned in this area to better understand the orientation of the very high-grade zone in hole FRC378.
- Step-out holes to the north and north-east intersected gold mineralisation, demonstrating that Kamperman remains open to the north.
- Further assay results from the Kamperman program are pending.
- The RC rig is currently undertaking a program of several drill holes at Mandilla to determine dewatering requirements as part of the hydrogeological work program for the Mandilla Pre- Feasibility Study( PFS).
- At the Iris Deposit, a program of ten holes for 1,365 metres of in-fill drilling has been completed with a further ten holes remaining to be drilled. At the Eos Deposit, 16 holes for 2,540 metres will be drilled shortly.
- At Mandilla, a DD rig has commenced a four-hole/1,600 metre drill program of four deep in-fill holes ahead of an update to the Theia Mineral Resources Estimate (MRE), which is expected to be reported in the March Quarter, 2025.
Astral Resources’ Managing Director Marc Ducler said:“These latest holes at Kamperman continue to surprise to the upside – showing that there is a potentially very significant high-grade opportunity here that we are yet to unlock.
“Previously, FRC243 returned a very high-grade zone of two metres at 188g/t Au from 77 metres, 40 metres to the north-east. FRC378 has now returned another very high-grade zone of three metres at 177g/t Au from 74 metres.
“Previous diamond drilling that was completed to better understand the potential orientation of this very high-grade zone was not successful; however, given the potential size of the prize, additional work is warranted.
“The extensional drilling completed to the north and north-east has continued to intersect gold mineralisation, albeit the gold grades were of a lower tenor than expected given the quantum of quartz and sulphides logged in the RC chips. Additional RC drilling is planned given the proximity to a north- east trending fault which is potentially controlling the mineralisation or offsetting it.
“It is becoming clear that Kamperman hosts multiple potential controlling structures that warrant further investigation, as does Feysville as a whole.
“The in-fill RC program at Iris is 50% complete. The program is now on hold for approximately three weeks while groundwater testing is undertaken with the RC rig. Once the groundwater program is complete, RC drilling will resume at Iris and Eos.
“Meanwhile, diamond drilling is now underway at Theia with four deep in-fill holes for 1,600 metres planned. These holes are designed to provide the level of confidence required to warrant an upgrade of the Inferred Resources at depth into the Indicated Resource category.”
Figure 1 – Map illustrating the location of the Mandilla and Feysville Gold Projects.
FEYSVILLE GOLD PROJECT
The Feysville Gold Project is located within the north-north-west trending Norseman – Wiluna Greenstone Belt, within the Kambalda Domain of the Archean Yilgarn Craton, approximately 14km south of the KCGM Super Pit in Kalgoorlie.
Significant gold and nickel mineralisation occurs throughout the belt, including world-class deposits such as the Golden Mile Super Pit in Kalgoorlie owned by Northern Star Resources Limited (ASX: NST) and the St Ives Gold Mine south of Kambalda owned by Gold Fields Limited. The area also hosts the substantial Beta Hunt Gold Mine owned by Westgold Resources Limited (ASX: WGX).
Feysville hosts an MRE of 3Mt at 1.3g/t Au for 116koz2 of contained gold at the Think Big deposit, providing a foundation for the project to potentially become a source of satellite ore feed for a future operation based on Astral’s flagship Mandilla Gold Project.
Locally, Feysville has been interpreted to contain upthrust ultramafics, emplaced within a sequence of volcanic sediments (the Black Flag sediment group), granitic intrusions, mafic basalts, gabbro and andesite. A map of the Feysville Gold Project identifying tenements and deposits/prospects on local area geology is set out in Figure 2.
Click here for the full ASX Release
This article includes content from Astral 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.
AAR:AU
Astral Resources Investor Kit
- Corporate info
- Insights
- Growth strategies
- Upcoming projects
GET YOUR FREE INVESTOR KIT
Astral Resources
Overview
Astral Resources (ASX:AAR) is a gold mineral exploration company with three gold projects in tier 1 mining jurisdictions of Western Australia. The three assets are the Mandilla gold project, the Feysville gold project, and the Carnilya Hill gold project. The flagship and 100 percent owned Mandilla gold project has a mineral resource containing 1.27 million ounces (Moz) of contained gold. The other key project, 100 percent owned Feysville, hosts an updated mineral resource estimate of 5.0Mt at 1.2g/t gold for 196koz of contained gold . Feysville could potentially become a satellite source of high-grade ore feed for the flagship Mandilla gold project.
The scoping study completed at Mandilla unveils robust project economics. The cornerstone of the scoping study is the Theia deposit, which alone accounts for 81 percent of the total Mandilla mineral resource estimate. The deposit hosts a mineral resource estimate of 29 Mt at 1.1 g/t gold for 1.02 Moz of contained gold in one large open pit. The scoping study indicates a mine life of 11 years with an annual production of 100,000 oz in the first seven and a half years, dropping to 41,000 oz for the remaining three and a half years. The study outlines compelling financial metrics, including NPV@8 percent of AU$442 million, free cash flow of AU$740 million, and a payback period of nine months.
Astral Resources intends to increase production further. The assay results from the six-hole 1,832-metre drilling program completed at Theia deposit last year indicate a high potential for converting inferred resources to higher confidence indicated resources. Feysville presents another exciting opportunity, which is evident from the recent assay results at the Kamperman prospect. In 2023, Astral drilled 10 holes at Kamperman intersecting high-grade gold, including 4 metres at 94.8 g/t gold, 21 metres at 4.16 g/t gold, 35 metres at 2.19 g/t gold, 10 metres at 4.57 g/t gold, and 5 metres at 5.89 g/t gold.
The presence in Western Australia, a tier 1 mining jurisdiction, is encouraging and should comfort investors. Western Australia has world-class infrastructure and a skilled workforce. The Fraser Institute ranked it fourth globally and first in Australia as the most attractive jurisdiction for mining investment in 2023.
Astral benefits from a team of professionals boasting extensive expertise in geology and mining. The company is led by managing director Marc Ducler, who has more than two decades of experience in the mining industry. The management team has a proven track record of executing several successful exploration and development projects, as well as M&A.
Company Highlights
- Astral Resources is an ASX-listed gold exploration company in the Kalgoorlie region of Western Australia, a tier 1 jurisdiction and a mature mining region with successful development history and granted mining leases.
- The company has three assets - the Mandilla gold project, the Feysville gold project, and the Carnilya Hill gold exploration project.
- The focus is on advancing its flagship Mandilla gold project, with a mineral resource estimate of 37 Mt at 1.1 g/t gold for 1.27 Moz.
- The scoping study at Mandilla highlights the project’s robust economics with a mine life of 11 years, NPV@8 percent of AU$442 million, and free cash flow of AU$740 million.
- Mandilla’s cornerstone Theia deposit, which comprises 81 percent of the project’s resources, contains 29 Mt at 1.1 g/t gold, with 1.02 Moz of contained gold in one large open pit.
- Updated JORC 2012 mineral resource estimate (MRE) at the Feysville gold project is 5.0Mt at 1.2g/t gold for 196koz of contained gold.
- Including the Mandilla MRE of 37Mt at 1.1g/t gold for 1.27Moz of contained gold, Astral’s total gold MRE is now calculated to be 42Mt at 1.1g/t gold for 1.46Moz of contained gold (Group MRE).
- The company is led by an experienced team with a proven track record of advancing projects to development and M&A.
Key Projects
Mandilla Gold Project
The Mandilla gold project is located within the northern region of the Widgiemooltha greenstone belt, approximately 70 kilometers to the south of the prominent mining hub of Kalgoorlie, Western Australia. Mandilla includes four deposits namely, Theia, Iris, Eos and Hestia. The cornerstone of the project is the Theia deposit, constituting 81 percent of Mandilla's resources, totaling 29 Mt at a grade of 1.1 g/t gold, amounting to 1.02 Moz of contained gold in a single open pit. We note that Mandilla has a total mineral resource estimate of 37 Mt at 1.1 g/t gold for 1.27 Moz.
The scoping study indicates a mine life of 11 years with an annual production of 100,000 oz in the first seven and a half years, dropping to 41,000 oz for the remaining three and a half years. Astral estimates the pre-production capital spend at AU$191 million, and the project is anticipated to generate a free cash flow of AU$740 million (assuming a gold price of A$2,750/oz). The project’s NPV @8 percent is estimated at AU$442 million, and the IRR at 73 percent.
Drill collars at Theia deposit
Astral continues to advance exploration and resource expansion efforts at Mandilla. The company completed a six-hole 1,832 metre drilling program at Theia deposit last year. The assay results have been released and indicate a high potential for the conversion of inferred resources to higher confidence indicated resources. The assay results include: 39 metres at 5.4 g/t gold, 29 metres at 2.8 g/t gold, 28 metres at 1.4 g/t gold, 8 metres at 8.8 g/t gold.
Astral is planning to commence a pre-feasibility study at Mandilla.
Feysville Gold Project
The Feysville project is situated in Australia's premier gold belt, merely 14 km south of the Golden Mile deposit, which boasts 70 million ounces, located in Kalgoorlie. The project's updated JORC 2012 mineral resource estimate (MRE) indicates 5.0Mt at 1.2g/t gold for 196koz of contained gold. Including the Mandilla MRE of 37Mt at 1.1g/t gold for 1.27Moz of contained gold, Astral’s total gold MRE is now calculated to be 42Mt at 1.1g/t gold for 1.46Moz of contained gold (Group MRE).
At Feysville, Astral is focusing on the high-grade Kamperman prospect. A recent 19-hole 2,459 reverse circulation (RC) drilling program at Kamperman returned encouraging assay results. The latest drilling program yielded significant assay results in 14 out of 19 RC holes. This high success rate continues to indicate that Kamperman has the potential to be a substantial source of high-grade satellite ore for the Mandilla processing plant. A further 2,500-metre follow-up RC program is planned to extend known mineralization at Kamperman beyond the current 350-metre strike length.
Carnilya Gold Project
The Carnilya Hill gold project is situated about 20 kilometers south-southeast of the company's Feysville project and approximately 40 kilometers southeast of Kalgoorlie, Western Australia. The project encompasses various tenements – M26/047-049, M26/453 – spanning approximately 2.65 sq. km. Astral holds rights for gold mining, while Mincor Resources NL (ASX:MCR) holds rights to nickel and other minerals.Management Team
Mark Connelly – Non-executive Chairman
Mark Connelly is a mining industry veteran who has held positions of CEO and managing director with several multinational companies across many jurisdictions, including Australia, North America, South America, Africa and Europe. He has a proven track record in deal making and was principally responsible for the merger of Papillon Resources and B2 Gold Corp in October 2014 (value US$570 million), as well as the key person responsible for the merger of Adamus Resources and Endeavour Mining for US$579 million. He is currently the non-executive chair of Calidus Resources, Omnia Metals Group, Alto Metals, Warriedar Resources and Nickel Search.
Marc Ducler – Managing Director
Marc Ducler has more than 20 years of experience in the mining industry. He has held senior operational management roles with GoldFields, BHP, Fortescue Metals, MRL and Roy Hill. He was also the managing director of Egan Street Resources (a gold exploration and development company) until it was acquired by Silver Lake Resources (ASX:SLR).
Peter Stern – Non-executive Director
Peter Stern has experience in corporate advisory, specializing in M&A and capital raising. He has spent six years with Macquarie Bank and three years with UBS and Deutsche Bank. He is a graduate of Monash University with a Bachelor of Science (geology major). Stern is a fellow of the Australian Institute of Company Directors and the chairman of Troy Resources.
David Varcoe – Non-executive Director
David Varcoe is a mining engineer with over three decades of experience. He has extensive operational and managerial experience across various commodities, including gold, iron ore, copper, diamonds, coal, uranium and rare earths. His expertise spans board positions, operations management, project management and consulting. Varcoe is a principal consultant with the leading Australian firm AMC Consulting.
Justin Osborne – Non-executive Director
Justin Osborne is a geologist with over 30 years of experience in exploration. He was previously the executive director at Gold Road Resources (ASX:GOR), where he played a crucial role in developing the world-class Gruyere gold deposit (6.6 Moz gold). Osborne also held senior positions on the exploration executive team at Gold Fields. He was instrumental in developing the Damang Superpit project in Ghana and achieved significant discovery success at the St Ives gold mine.
Brendon Morton – Chief Financial Officer & Company Secretary
Brendon Morton has over 20 years of experience, particularly in the global resources sector across Australia, Africa and Asia. He has held several executive financial and company secretarial roles with ASX-listed and unlisted companies in the resources industry.
Jed Whitford – General Manager Business Development and Projects
Jed Whitford is a mining engineer with over 20 years of industry experience. His expertise primarily encompasses gold and base metals operations, having worked with companies such as Western Mining, Gold Fields, Golder Associates, Xstrata and Glencore.
Julie Reid – Geology Manager
Julie Reid has 36 years of experience working across Australia, Vietnam and Indonesia, covering a variety of commodities in diverse geological terrains. She holds a Bachelor of Applied Science from Curtin University of Technology.
Ore Purchase Agreement with Westgold Resources Unlocks Gold Production from Crown Prince
HIGHLIGHTS
- New Murchison Gold (NMG) and Westgold Resources (Westgold) have entered into an Ore Purchase Agreement (OPA) which will underpin production from NMG’s Crown Prince deposit near Meekatharra, Western Australia in 2025.
- Subject to final regulatory permitting, under the OPA, NMG will commence mining from a new open pit operation at Crown Prince with a targeted commencement date of mid-2025.
- Ore will be hauled 33km by road to the Bluebird Gold Processing Plant, part of Westgold’s Murchison Gold Operations at Meekatharra.
- Ore will be sold to Westgold in several parcels (Ore Parcels) totalling 30-50kt per month with each Ore Parcel certified for grade, moisture and recovery from sampling at the Crown Prince site and a recovery factor agreed for each mining bench from test work replicating the Bluebird Mill circuit.
- The OPA has no fixed term although NMG envisages that most of Crown Prince ore is likely to be processed in an “Initial Period” which runs over the first 24 months of the agreement. Thereafter ore tonnages are to be agreed on a rolling three-month basis once production forecasts have been completed by NMG and Westgold has confirmed mill availability.
- Westgold will purchase ore from NMG based on contained gold in each Ore Parcel at the prevailing AUD gold price in the month the Ore Parcel is collected (minus processing costs and a capital recovery charge). Westgold must promptly collect Ore Parcels that are available for collection.
- The OPA is subject to shareholder approval (Listing Rule 10.1 requirement) at a general meeting of NMG shareholders to be held in late January or early February 2025.
- NMG and Westgold have also entered into an ancillary agreement (Licence and Access Water Discharge Deed) which facilitates NMG’s potential dewatering requirements at Crown Prince.
Alex Passmore, NMG’s CEO commented: "We are very pleased to announce the Ore Purchase Agreement with Westgold as it sees both companies working together to support the development of NMG’s Crown Prince deposit in a capitally efficient manner.
We see this Agreement as beneficial to all shareholders with Westgold acquiring additional high grade oxide ore feed to supplement its Meekatharra operations and NMG transitioning to a producer for modest capital.
The Bluebird Processing Plant owned by Westgold is ideal for NMG due to its close proximity and well-matched metallurgical process. We believe the robust frameworks and protocols we have put in place in this Agreement aligns both operational teams to a common goal of maximizing operational efficiency.
We thank the Westgold team for the technical and commercial work that has led to this Agreement and look forward to working collaboratively in making the development of Crown Prince a success”
Crown Prince is located to the north of Meekatharra, around 33km via road to the Bluebird Gold Processing Plant (Bluebird) owned and operated by BBGO. Westgold and NMG have been working collaboratively on the OPA to manage technical risks and to share economic synergies which are available via the partnering of production from the Crown Prince deposit and milling at Bluebird.
Key Terms of the OPA are outlined in the Table below and will be explained fully in a Notice of Meeting to be sent to NMG shareholders in December. The NMG shareholder meeting is likely to be held in late January or early February 2025. As a result of Westgold’s 18.7% ownership of NMG, it is deemed a related party under the ASX Listing Rules and so the OPA includes a condition precedent of NMG obtaining shareholder approval under Listing Rule 10.1.
BDO Corporate Finance Australia Pty Ltd (BDO) has been engaged to provide an opinion and Independent Expert’s Report to accompany the Notice of Meeting to assist shareholders in their considerations of whether or not to approve the OPA moving into operation.
Should the conditions precedent be met (shareholder approval) the OPA will come into effect with NMG expecting mining approvals to be received in early April 2025. Once mining operations commence, and ore stockpiles are built up, it is anticipated that first Ore Parcel sales will occur in September 2025.
The company is working towards an ore reserve estimate to provide further detail on the economics of the project which is to be released shortly.
Plan of Access and Water Infrastructure - Crown Prince
Authorised for release to ASX by the Board of New Murchison Gold Limited.
Click here for the full ASX Release
This article includes content from New Murchison Gold 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.
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
Astral Resources Investor Kit
- Corporate info
- Insights
- Growth strategies
- Upcoming projects