Rumble Resources Limited (ASX: RTR) continues to build on its exciting Earaheedy Base Metal Project story in Western Australia with further high-grade assay results within the newly discovered major feeder fault zone named the Kalitan Feeder Zone at the Chinook Zn-Pb-Ag-Cu Prospect.
Shallow high-grade sulphide Zn-Pb mineralisation with strong silver has been intersected in RC drill-hole EHRC370 within the newly discovered feeder fault zone (Kalitan Feeder Zone) which lies along the northeast margin of the large-scale Chinook Prospect that currently has a 4.1km by 1.9km mineralised footprint and remains open both laterally and at depth.
Hole EHRC370 returned: 51m @ 4.76% Zn + Pb, 5.81 g/t Ag from 82m including; 20m @ 8.78% Zn + Pb, 11.65 g/t Ag from 98m , with a higher-grade core of 8m @ 14.61% Zn + Pb, 17.7 g/t Ag from 104m, and 8m @ 5.53% Zn + Pb, 5.08 g/t Ag from 124m
The fault zone corridors are considered feeders with respect to extensive epigenetic metal enriched fluid flow. Copper with minor cobalt develops within the feeder faults and laterally close to the feeders where the deposition temperature is likely higher.
Overall, six drill-holes are interpreted to intersect within or close to the Kalitan Feeder Zone over a strike length of 2.3 km. This zone remains completely open along strike and at depth, with assay results for holes EHRC129, EHRC361, EHRC408 and EHRC420 pending.
The current northwesternmost drill-hole (TDH14 – historic diamond core hole angled – 70° to the southwest) is inferred to intersect part of the Kalitan Feeder Zone. The overall intersection for TDH14 is 10m @ 3.5% Zn + Pb with a higher-grade core zone of 4.5m @ 5.43% Zn + Pb from 225m.
Earlier drill-holes completed by Rumble (EHRC055, EHRC251 and EHRC254) toward the southeast of the Kalitan Feeder Zone highlight the cross-cutting nature of the Kalitan Feeder Zone with the lithological strike (approximately 30°).
All three drill-holes returned wide low-grade mineralisation with higher-grade core zones, strong Ag and elevated Cu and Co.
Since the Chinook discovery in April 2021, scoping drilling has uncovered a rapidly expanding world class scale ZnPb-Ag-Cu base metal system, with the drilling continuing to make discoveries and new multiple large-scale targets emerging.
Recently, two key tenements have been granted. The granting of E69/3787 and E69/3862 (both 100% RTR) along with the current JV tenement E69/3464 (75% RTR:25% Zenith Minerals) has highlighted some 42km of highly prospective strike to the host Navajoh Unconformity.
The overall geological deposition model for the Earaheedy Base Metal Province is continually evolving with some five (5) styles of mineralisation identified.
Rumble has confirmed at least four of these styles within the Earaheedy Project area, and based on recent drilling completed by Strickland Metals, the likelihood of significant Iroquois Dolomite hosted mineralisation below Chinook, Tonka, Magazine and Navajoh is high.
The current drilling has outlined laterally extensive flat lying unconformity related zinc-lead-silver dominant sulphide mineralisation at the Chinook, Tonka, Magazine and Navajoh Prospects.
The mineralisation footprint at Chinook is 4.1km by 1.9km and is completely open and the mineralization footprint of the Tonka, Magazine and Navajoh Trend is 6km by 1.2km and completely open – See image 6. To the southwest and immediately below the unconformity related mineralization (Styles 1 and 2) at Tonka, a very wide low-grade Zn-Pb zone has been discovered within the Purple Shale unit that lies below the Navajoh Unconformity.
The mineralisation (Style 5) is a wide fracture zone with multiple fault/sulphide veinlets with Zn-Pb-Ag-Cu-pyrite. Historic drilling completed by RGC (Renison Gold) within the main Navajoh Dolomite unit which lies down-dip and to the northeast of the current Rumble prospects, intersected MVT Zn-Pb-Ag fault related mineralisation.
Exploration programme from 2021:
• Over 50% of the assays from the 50,000m of drilling in 2021 remain outstanding
• Of note: assays for completed holes EHRC129, 361, 408, and 420, which are interpreted to intersect the Kalitan Feeder Zone are included in these pending assays
Exploration programme for 2022:
Chinook Prospect (RTR (75%) / ZNC (25%) JV) – E69/3464
• RC infill and extension drilling to further delineate the shallow high-grade Zn-Pb mineralisation in the Navajoh Unconformity Unit and Kalitan Feeder Zone
• Diamond core drilling to test the feeder structures in the underlying purple shale and Iroquois formations targeting Cu-Zn-Pb-Ag Deposits
• Further drilling to define potential new feeder fault zones nearby which have already been inferred Tonka-Magazine-Navajoh Prospects (RTR (75%) / ZNC (25%) JV) – E69/3464
Ongoing scoping (RC drilling) of the Tonka-Magazine-Navajoh Trend Sweetwater Tenements (RTR 100%) – E69/3787 and E69/3862
• Initial reprocessing of airborne magnetic data over the Sweetwater Trend has inferred the magnetic features, and contrasts are identical to the features seen at Chinook
• Ongoing interpretation of the airborne magnetic data has identified multiple first order litho-structural and potential feeder targets
• Rumble is in advanced stages with TMPAC to complete heritage surveys to clear the upcoming planned drilling programmes
• Once the heritage surveys are completed, the focus of drilling will be to rapidly extend and define the limits of Chinook’s large-scale Zn-Pb-Ag-Cu mineralised footprint further to the west
• A large surface geochemical survey is planned along the entire 15kms of the Sweetwater Trend which in combination with the airborne magnetic data should define additional new first order drill targets.
For further information please visit: https://rumbleresources.com.au/
