Rumble Resources Limited Announces the Latest Round of RC Drilling Results from the Tonka-Navajoh Prospect at the Earaheedy Project
- 7m @ 10.71% Zn + Pb (8.52% Zn, 2.19% Pb) from 137m (EHRC518) - Including 3m @ 19.93% Zn + Pb from 138m - 22m @ 4.27% Zn + Pb from 110m (EHRC399) - Including 11m @ 5.82% Zn + Pb, from 121m - 20m @ 4.27% Zn + Pb from 112m (EHRC398) - Including 8m @ 6.75% Zn + Pb, from 117m. Of significance, on the PP Section, both EHRC544 and EHRC547 ended in mineralisation, with EHRC547 ending in high grade mineralisation - 2m @ 8.20% Zn + Pb. Further drilling will be planned to define the limits to this high grade mineralisation. Mineralisation is hosted primarily in a laterally extensive flat lying altered marl unit, which is associated with the Navajoh Unconformity. The Navajoh Unconformity Unit (multi-facies sediments that lie above the unconformity) that also hosts the Chinook mineralisation, appears to have thinned along the Colorado Fault Zone and in places is absent. In these areas, sphalerite dominant zones have developed within the Navajoh Dolomite which lies immediately below the unconformity. The Zn:Pb ratios are up to 10:1, which is significantly higher than the Chinook Zn-Pb-Ag-Cu mineralisation that lies some 9km to the northwest. Immediately to the north and potentially south of the main Colorado Fault Zone, sub-parallel strongly mineralised east-west structures support the potential for further new en-echelon high grade Zn-Pb zones to be delineated. Magazine Fault Zone (Tonka Prospect): The Magazine Fault Zone lies 600m south of the Colorado Fault Zone and is now interpreted to trend east-west. Recent drilling results and pending holes supported by pXRF analyses highlight potential strong Zn dominant mineralisation that remains open along strike. The easternmost hole (EHRC499) returned: 8m @ 4.00% Zn + Pb (3.71% Zn, 0.29% Pb) from 151m with narrow higher-grade zones of 1m @ 8.14% Zn + Pb from 156m and 1m @ 8.37% Zn + Pb from 162m. Navajoh Prospect: A single RC reconnaissance drillhole, 1.3km's southeast of the Navajoh Prospect, testing a gravity target has also returned strong Zn dominant mineralisation: 5m @ 2.74% Zn + Pb (2.66%Zn, 0.08% Pb) from 151m (EHRC487) - inc 1m @ 11.03% Zn + Pb (10.85% Zn, 0.18% Pb) from 153m. This new intercept has been interpreted as a new east-west mineralised fault zone which is open in all directions and remains to be drill tested. Tonka - Navajoh Structural Controls on Mineralisation: Emerging from the ongoing drill results and re-interpretation of the mineralisation trends with the aid of the recent preliminary results from the Airborne Gravity Gradiometry survey over the Tonka-Navajoh area is the inferred association of northeast trending and east-west mineralising structures. The latest interpretation suggests the east-west mineralised structures were the original fault zones associated with sets of extension/normal faults that lie primarily below the Navajoh Unconformity. The northeast structures were the likely link faults. Later tectonics (not necessarily associated with mineralisation) has subsequently overprinted the east-west fault zones (reverse faults). Next Steps at the Tonka-Navajoh Prospect: A further 38 RC and diamond holes from the recent campaign at Tonka- Navajoh, which were planned to infill and extend the Colorado and Magazine Fault Zones remain to be reported - Early interpretation of the preliminary Airborne Gravity Gradiometric (AGG) data has highlighted the Fault Zones as potentially a series of stacked high grade east-west mineralising structures within the extensive broad mineralised envelope (8km x 2km) at Tonka -Navajoh. Multiple new targets are being generated from this preliminary data and the Company is currently planning further RC/DDH drilling to test these areas in the near term. Sighter metallurgical test work to develop a preliminary flowsheet for the sulphide flotation concentrate is progressing well. An independent technical study to determine the optimum drill spacing for a maiden resource has commenced.