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Rumble Resources Limited (ASX: RTR) (“Rumble” or “the Company”) is pleased to announce the latest round of high- grade Zn-Pb RC drilling results from the Tonka Prospect, plus the delineation of multiple new gravity low targets which potentially may represent new high-grade feeder faults within the 11km Tonka-Navajoh mineralised footprint and over 9km of drill untested strike southeast of Tonka-Navajoh deposit (Navajoh Southeast Trend). The new high priority targets were interpreted following recently completed soil geochemical and airborne gravity gradiometer surveys at the Earaheedy Project, located 110km north of Wiluna, Western Australia.
Geochemistry and Airborne Gravity – Multiple New Feeder Targets
- Surface geochemistry and airborne gravity surveys have defined multiple high- grade feeder zone targets at Tonka-Navajoh Prospects and the newly defined Navajoh Southeast Trend
- Interpretation of the recent airborne gravity survey has highlighted a strong association between gravity lows and higher-grade Zn-Pb feeder faults at the Tonka and Navajoh Prospects
Navajoh Southeast Trend E69/3787 (100% RTR) – 9kms of untested strike
- Surface geochemistry along the Navajoh Southeast Trend returned strong continuity of Zn-Pb in soil anomalism over 9km of untested strike
- Airborne gravity highlighted numerous gravity low targets that potentially represent multiple new high grade feeder faults along the 9km of strike
- These exciting new feeder targets are planned to be drill tested in early 2023
Tonka-Navajoh Prospect – over 11kms of Zn-Pb mineralisation defined
- Recent drilling has now extended the strike of the Tonka-Navajoh mineralisation to over 11km; a 37% increase in length.
- Within this large mineralised footprint numerous gravity low targets that could represent new high grade feeder faults or extensions to existing feeder faults have been identified
RC Drilling - Tonka-Navajoh
- The Tonka-Navajoh Zn-Pb mineralised footprint is over 11km along strike and up to 3km cross strike and remains open along strike and down dip
- The Colorado Feeder Fault continues to deliver high-grade results including:
- 8m @ 5.64% Zn + Pb from 213m (EHRC562)
- Inc 3m @ 11.94 % Zn + Pb from 214m
- 8m @ 3.90% Zn + Pb from 212m (EHRC556)
- Inc 2m @ 7.13% Zn + Pb from 214m
- 3m @ 7.08% Zn + Pb from 129m (EHRC551)
- 8m @ 5.64% Zn + Pb from 213m (EHRC562)
- A newly defined mineralised feeder structure, 800m northwest of the Colorado Feeder Fault has returned:
- 5m @ 5.38% Zn + Pb from 97m (EHRC580)
- The Magazine Feeder Fault has likewise delivered further high-grade results including:
- 8m @ 3.34% Zn + Pb from 58m (EHRC565)
- Inc 4m @ 5.60% Zn + Pb from 58m
- 5m @ 3.85% Zn + Pb from 85m (EHRC563)
- Inc 3m @ 6.00% Zn + Pb from 85m
- 8m @ 3.34% Zn + Pb from 58m (EHRC565)
Geochemical and Geophysical Exploration – Potential New Targets
Image 1 – Tonka-Navajoh mineralisation footprint with partial leach geochemistry, identified east-west feeder faults and newly interpreted feeder fault targets over vertical gravity imagery
Soil Geochemistry – Navajoh Southeast Trend - Image 1
Broad spaced partial leach sampling on a 1000m by 200m pattern completed southeast of Navajoh (Navajoh Southeast Trend) in conjunction with previous orientation partial leach sampling (same methodology) at the Navajoh Deposit, has delineated strong continuity of Zn–Pb anomalism over a strike of some 11 km.
The anomalism is inferred to represent the up-dip position of the northeast shallow dipping mineralised Navajoh Unconformity which hosts the Tonka-Navajoh and Chinook Zn-Pb deposits.
Of significance, the tenor of Zn-Pb anomalism in soils over the 9km Navajoh Southeast trend is equivalent or higher than the up-dip tenor over the already drill defined Navajoh Deposit.
The depth of cover (including late lacustrine sediments) is estimated to be 10 to 20m under the recently defined Zn- Pb soil anomalism, hence the overall lower elemental response. However, the partial leach sampling and assaying methodology was successful in delineating the up-dip position of the mineralised unconformity.
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RTR:AU
EIS Grant for Minnie Springs Copper Porphyry Drilling
- Augustus Minerals has been granted a co-funded drilling grant of up to $110,000 for 2 x 700m deep diamond drill holes under the WA Government’s Exploration Incentive Scheme (EIS) for the Minnie Springs prospect.
- The deeper diamond drill program is designed to test and to provide a 550m deep, 1km wide geological/geochemical/structural cross-section through the large 3km long by 1km wide copper moly porphyry system, linking the Mo mineralised leucogranite to the extensive Cu in soil anomaly to the northeast.
- Previous RC drilling at Minnie Springs intersected mineralisation, geology and alteration halo consistent with the zoning of a large porphyry copper / moly system.
Andrew Ford, GM Exploration
“The Company is pleased to receive an EIS grant to complete deeper drilling at the Minnie Springs Copper Molybdenum Project. The resultant data will enable mapping of the lithology and alteration to a depth of 550m and potentially intersect, or provide vectors to, higher grade Mo-Cu mineralisation using a Mo-Cu porphyry geological model”.
Minnie Springs
Minnie Springs hosts porphyry related copper molybdenum mineralisation previously drilled and defined by Catalyst Metals. A molybdenum Exploration target has been defined for the historicdrillingareacomprisedofbetween12-84Mtasoutlinedbelow (Table 1 and Figure 1, 2.)1.
Table 1. Exploration target size estimate for Minnie Springs Molybdenum depositNote: Based on ~300 ppm cut-off at 100% recovery.
The potential quantity and grade of the exploration target is conceptual in nature, there has been insufficient exploration to estimate a Mineral Resources, and it is uncertain if further exploration will result in the estimation of a Mineral Resource.
The planned diamond drilling will complement the recently completed 3,200m RC drilling program that infilled around hole MSRC012 (18m @ 0.37% Cu and 9.7 g/t Ag from 94m downhole, and 16m @ 0.38% Cu and 19.4g/t Ag from 121m downhole2) and tested the northern half of the 2km long copper-in soil anomaly. Assays from this program are expected to become available over the next month.
The limited exploration in the region, highlighted by 95% of the Ti-Tree project having no previous exploration, demonstrates the prospectivity of this underexplored mineral province.
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Quarterly Activity Report 31 March 2024
Figure 1. Fiery Creek Copper Prospect/Yataga Granodiorite summarizing rock (brown diamonds) and termite mound sample results (black crosses)
Continuing with its primary exploration focus on the Georgetown project in the latter half of 2023, EMU received assay results during the quarter from its second, in field reconnaissance work. The geochemical sampling programme covered the Fiery Creek high grade copper vein swarm and the Snake Creek prospects with significant element results returned from the Fiery Creek Copper (elevated Cu-Au-Ag-Bi-In-Pb-Sb-Te) and Snake Creek (elevated Pb-Ag-Au-Sb).
Whilst the survey was cut short due to inclement weather, EMU was encouraged by the significant success reflected in the assays results. The results from mineralogical studies confirmed EMU’s interpretation of an indicative, scale Copper-Porphyry system at the Fiery Creek prospect and was a highlight of the survey with new information building on the scale and potential of the prospect1.
Assay results returned included:
- Fiery Creek rock assay results up to 23.5% Cu, 0.27ppm Au, 460ppm Ag, 1.9% Bi, 89ppm In, 2.7% Pb, 667ppm Sb, 1470ppm Zn2.
- evidence of strong potential for the presence of critical and strategic minerals (Cu, Bi, In), with precious and base metals.
- evidence of alteration mineralogy, mineralisation geochemistry and areal extent of the Fiery Creek quartz-Cu-Bi vein swarm strongly suggesting a previously unrecognised subjacent porphyry Cu-Mo system.
- Yataga Granitoid Complex termite mound and coincident rock chip sampling returned several anomalous polymetallic zones for follow up.
- Snake Creek Prospect assays returned 0.20ppm Au, 390ppm Ag, 22.4% Pb, 464ppm Sb1.
Significant results were returned from the Fiery Creek Copper prospect with elevated Cu-Au- Ag-Bi-In-Pb-Sb-Te and from the Snake Creek prospect with elevated Pb-Ag-Au-Sb.
The elevated pathfinder element results and a macro-petrology assessment3 of rock samples completed by Mr Nigel Maund, Consulting Economic Geologist, from the previously unexplored Fiery Creek Prospect, point to the discovery of a porphyry copper system.
The sampling program assessed a number of high-priority prospects within the Georgetown Project tenements utilising termite mound and outcrop rock chip geochemistry. A total of 46 rock chip and 489 termite mound samples were collected across eight prospects.
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Basin Energy Mining Exploration Entity or Oil and Gas Exploration Entity Quarterly Cash Flow Report
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