TOOLOOM
The Tooloom Gold Project is a long-standing Malachite asset and comprises an old and largely forgotten goldfield with numerous prospects of different types. Mineralisation generally appears to be of reduced intrusive-related gold deposit type, analogous to the deposits of the Tintina belt in Alaska and the Yukon. Several gold-bearing intrusive systems have been recognised, the largest of which is known as Phoenix.
Highlights of the discovery at Phoenix are:
- A mineralised zone around 20-40m wide and 250m long, open at depth
- Average grades of the order of 2-2.5 g/t Au, increasing with depth and to the northeast
- Individual 1m gold assay values up to 16.5 g/t Au
- Individual 1m antimony values up to 8.38% Sb
- Hosted by hydrothermal breccia
- Part of a huge mineralised system which contains several other targets yet to be fully tested.
The best gold mineralisation discovered at Phoenix so far occurs within a breccia pipe. A geophysical survey, using the induced polarisation (IP) technique, conducted by the Company in 2004, indicated that this breccia pipe is part of a much larger auriferous system that contains a billion tonnes of chargeable (i.e. sulphide-bearing) rock. All holes drilled into this system to date have intersected anomalous in gold. The gold mineralised zones also tend to have elevated levels of copper (up to 0.84% Cu over 1m) and silver (up to 86 g/t Ag over 1m). Antimony generally accompanies the gold, especially near the margins of the breccia pipe, and economically significant values of up to 8.38% Sb have been intercepted. The highest antimony values occur where late stibnite veins cross-cut the breccia, but stibnite also occurs in the breccia matrix. Overall the pattern of metal zoning supports Malachite’s view that a large mineralised intrusive body may underlie the Phoenix area and could represent a very attractive deep target for future exploration.
Exploration techniques applied to date at Tooloom include:
- Geological mapping
- Stream sediment geochemistry
- Ridge and spur soil geochemistry
- Grid-based soil geochemistry
- Helicopter-borne aerial magnetic and radiometric surveying
- Helicopter-borne aerial electromagnetic surveying
- Ground geophysics, mainly induced polarisation
- General prospecting and sampling of rocks in outcrop and on old mine dumps
- Mapping and sampling of old underground workings
- Diamond core and reverse circulation percussion drilling
For further information on the Tooloom Gold Project please follow these links: >> Location and history
>> Geology of the Tooloom area
>> Phoenix maps and exploration data
>> Exploration results elsewhere at Tooloom
>> Tooloom Photo Gallery
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