High Grade Gold Drill Targets Defined at Nemesis
Nemesis High Grade Gold Project - M20/33
- RC drill holes will be targeting the depth extensions of the historic Nemesis Au mine for potential high-grade mineralisation.
o Between 1900-1910, the Nemesis gold mine produced 7157oz of gold from 2276 ton of ore - 98 g/t Au grade
o No drilling has tested the depth extension to the Nemesis mine workings.
- RC drill holes are planned to test areas of historic elevated Au in soil anomalism west and east of the Nemesis Au mine within the Nemesis Shear Zone.
o The Nemesis Shear Zone extends under a laterite plateau to the east and has not been drill tested. Strong Au in soil anomalism has not been drilled tested to the west.
Nemesis Shear Zone
The Nemesis shear zone is an east-west trending mineralised shear zone that forms the contact between the north sequence of mafic volcanics/BIF's and granites to the south. The shear zone occurs close to the scarp of the lateritic plateau.
The mineralisation style associated with the Nemesis Shear Zone (NSZ) is high-grade gold with quartz veining in high sulphidation (pyrrhotite/pyrite) zones in contact with BIF/mafic volcanics and granites. The NSZ is steeply dipping to the north. Sub-vertical shoots (i.e. the Nemesis mine) have generally short strike lengths with significant dip length extensions.
The Nemesis Shear Zone strikes approximately over 1.2 km within the project area and the Nemesis mine area has only been partly tested by shallow RC drilling over a strike of 160m.
Gold in soil anomalism (lag sampling) with >50 ppb Au response extends along the NSZ. Over 500m of strike remains untested by drilling including where the NSZ extends under the laterite plateau.
Nemesis Shear Zone High-Grade Gold Drill Targets
Nemesis Mine - Depth Extension (see Image 2 and 3 in link below)
The historic workings at the Nemesis Au mine have been worked to a maximum depth of 70m with three steep plunging high-grade gold (average grade of 98 g/t Au) shoots (85deg to the east) over a strike length of 60m - See image 1 and Image 2 in link below. The shoots are stacked and the plunge of the stacking is moderate to the east.
RC drilling along strike to the east was very shallow (maximum vertical depth of 35m) and did not test the plunging mineralisation.
Rumble plans to complete up to 3 RC drill holes (see image 2 in link below) targeting high-grade gold mineralisation below the current Nemesis ore shoots.
Nemesis Shear Zone Strike Extension Targeting (see image 1 in link below)
Rumble plans to RC drill test for potential high-grade shoots associated with the Nemesis Shear Zone along strike from the Nemesis Au Mine. Targets are east and west from the Nemesis Au Mine. The western target (500m west of the Nemesis Au Mine) lies immediately below the laterite scarp and is related to Au in soil anomalism over the Nemesis Shear Zone. The eastern target (some 300m easterly of the Nemesis Au Mine) is where the Nemesis Shear Zone is interpreted to pass under the laterite plateau. Au in soil anomalism occurs over the laterite and has not been drill tested.
About the Historic Nemesis Gold Mine
The historic production of the Nemesis gold mine was in two stages. Refer ASX announcement 6 March 2018 for further detail including open file reference.
- Mining started in 1900 and 5,538.86 oz of gold was produced from 2,075 tons for 83 g/t Au.
- In 1909, another 1618.14 oz of gold was produced from 201 tons for 250 g/t Au.
- The total production is 7157 oz of gold from 2,276 tons for an average weighted grade of 98 g/t.
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About Rumble Resources Ltd
Rumble Resources Limited (ASX:RTR) (FRA:20Z) is an Australian based exploration company, officially admitted to the ASX on the 1st July 2011. Rumble was established with the aim of adding significant value to its current gold and base metal assets and will continue to look at mineral acquisition opportunities both in Australia and abroad.
Rumble Resources Ltd