Pincher Well Zinc-Copper: Strong IP Anomaly Highlights Significant Untested Southern Extensions to Mineralisation
The Induced Polarisation ('IP') survey has defined a chargeable zone that correlates well to the known mineralised envelope and substantial zone of previously unrecognised/untested mineralisation to the south, and 'up-dip', from the known North Dome zinc-copper prospect.
PINCHER WELL ZINC-COPPER PROSPECT:
- Preliminary geophysical surveying of the Pincher Well Volcanogenic Massive Sulphide Trend ('VMS') has been completed,
- An Induced Polarisation (IP) survey has identified significant shallow 'up-dip' extensions, to the south, of the known North Dome mineralisation (Figure 1 & 2 in the link),
- These near-surface 'southern extensions' are UNTESTED by drilling and have the potential to significantly expand the known envelope in terms of both tonnage and grade (Figure 3 in the link),
- Drill results along strike include:
-- PW009 4.02 m @ 3.83% Zinc from 58.46 metres
-- PW011 1.52 m @ 13.84% Zinc from 93.57 metres
- Drill testing of these 'southern extensions' and additional IP survey to the south are planned,
- The North Dome prospect is developing into a significant 'Exploration Target' for future resource drilling, and has been upgraded to:
-- 15-25 Million Tonnes @ 3-8% Zinc & Copper
Pincher Well Zinc-Copper VMS Trend
The Pincher Well VMS Trend is located 600km north-northeast of Perth and forms part of Venus Metals Corporation Ltd.'s ('Venus') Youanmi gold & base metal project (Figure 1 in the link). The tenements (E 57/986 & 1019) hosting the Trend are situated 15 km southwest of the Youanmi Gold Mine and processing plant. The Youanmi region is well serviced by significant infrastructure associated with historical and ongoing mining operations in the region including those at Windimurra & Sandstone.
The Pincher Dome VMS Trend covers more than 5 kilometres of strike and hosts a number of known zinc and copper prospects including the Linda & Franca Gossans, PW17 zinc discovery and a substantial body of zinc mineralisation at North Dome (Figure 2 in the link).
Drilling at North Dome, during the 1970s, outlined a shallowly dipping body of mineralisation up to 20 metres thick at more than 2% contained zinc. This body covers more than 1,000 metres of strike and is over 500 metres wide. Little exploration has been completed since that time, however a recent reinterpretation of the mineralised system by Venus Metals indicates that the mineralised envelope remains open in all directions and requires further exploration - the recently completed IP survey confirms this analysis (Figure 2 in the link).
North Dome IP Survey
Induced polarisation ('IP') is a geophysical surveying technique utilising electricity to identify conductive, or non-conductive, units within the subsurface rock strata. The method uses a number of electrodes to both transmit and receive electrical currents, measuring the time taken and the signal response to identify geological units enriched in metallic sulphides.
An initial IP surveying at Pincher Well on the north-south lines proved challenging due to thick vegetation, however a number of strong anomalies were detected adjacent to these survey lines. In rder to better define these anomalies, a number of east-west survey lines were completed along established grid lines and have outlined an extensive IP anomaly lying to the west and overprinting the known North Dome mineralisation (Figure 3 in the link).
The IP survey results where outstanding and demonstrated the following features:
- The IP was shown to be a highly effective method of targeting disseminated zinc-copper sulphide mineralisation at North Dome,
- A chargeable zone with an 8mV/V wireframe has a strike and width of approximately 600m, highlighting the known mineralisation on the north, as well as identifying potential unrecognised extensions to the mineralisation to the south (Figures 1-3 in the link),
- The survey indicates that the chargeable zone may extend further to the south bounded between the two north south lines which are 600m apart,
- Higher chargeability zones up to 15mV/V are evident on the two southernmost east west lines and remain open to the south and largely untested by drilling, with the potential to significantly expand the current 'Exploration Target' in terms of both tonnage and grade due to the size and tenor of the anomaly,
- The IP shows significant untested anomalies adjacent to established mineralisation, such as:
-- PW009 4.02 m @ 3.83% Zinc from 58.46 metres &
-- PW011 1.52 m @ 13.84 % Zinc from 93.57 metres (Figure 3 in the link),
- Additional IP survey lines are required to better define the target area.
The success of the IP at North Dome now provides a cost effective and reliable targeting tool for the exploration of Pincher Well VMS Trend, with additional target areas now prioritised for testing including:
- PW17 - An EM anomaly to the southeast of the North Dome (Figure 2 in the link), tested by a single drill hole that returned an intersection of:
-- PW017 2.5 m @ 24.30% Zinc & 0.08% Copper from 87.5 metres
- Eastern Gravity/EM Target - located approximately 1,000 metres to the east of North Dome and untested by drilling.
*The specifications and IP surveying locations can be found in Appendices 1 (JORC Table) & 2 of this document (referring to the link).
Planned Exploration & Targets
IP survey results, analysed by Venus Metals, in conjunction with magnetics, gravity and electromagnetic ('EM') data and historical drilling, demonstrate the North Dome prospect to be a highly compelling drill target (Figure 3 in the link).
Drilling and exploration by previous workers outlined an extensive 'Exploration Target'*, whose prospectivity is only enhanced by the identification of the shallow 'up-dip' extensions by the IP survey.
Venus Metals has now revised its 'Exploration Target' for the North Dome to:
-- 15-25 Million Tonnes @ 3-8% Zinc & Copper
-- Including high-grade lodes grading >10% Zinc & Copper
A Program of Works ('POW') is presently being prepared for submission to the Department of Mines and Petroleum ('WA DMP') to allow the refurbishment of a number of east-west survey lines so that Venus can:
- Extend the IP survey to the south, further testing the anomaly discovered by the recent geophysical surveying,
- Undertake preliminary drill testing of the newly recognised southern extensions to the North Dome deposit,
- Commence systematic resource drilling at North Dome.
The IP survey at North Dome has proven highly successful. A POW is to be lodged with the WA DMP to expedite and advance the work program at North Dome, including further IP surveying and systematic drill testing.
Venus Metals looks forward to updating shareholders exploration continues at North Dome and advances towards the definition of a significant resource.
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About Venus Metals Corporation Limited
Venus Metals Corporation Limited (ASX:VMC) holds a significant and wide ranging portfolio of Australian base and precious metals exploration projects comprising lithium, cobalt, vanadium, copper, zinc, nickel, gold and platinum group of elements.
Key project areas in Western Australia include:
- Pincher Well Zinc-Copper Project (Youanmi): Over 5 km of under explored VMS trend with an Exploration Target of 15-20 Million Tonnes@ 2-8% Zinc,which also hosts a number of high grade lodes (>10% Zinc).
- Currans Well Cobalt-Nickel-Copper Project (Youanmi): Significant Cobalt mineralisation up to 1483 ppm Co in historical drilling. Extensive Lateritic Duricrust Co-Ni target areas identified.
- Curara Well Nickel-Copper-Gold Project (Doolgunna):10 km northeast of Sandfire Resources DeGrussa Copper Mine. Wide intercepts of disseminated Nickel Sulphides (Millerites) in Ultramafics.
- Southern Cross Vanadium Project (Youanmi): JORC 2012 Inferred Vanadium Mineral Resource of 167.7 Millions Tonnes @ 0.41% V2O5, 7.52% TiO2.
- Strategic Lithium-Tantalum Projects in WA.
Venus Metals Corporation Limited