The Kalkaroo deposit shows typical supergene enrichment features...

The Kalkaroo deposit shows typical supergene enrichment features in its upper part, caused by oxidation of the primary sulphides in the weathering zone. This is manifest in a sub-horizontal stratification of the ore minerals from top to bottom, forming 4 main ore types as follows:

1. Supergene free gold in saprolite (Oxide Gold Cap), with generally minor copper, largely recoverable by gravity methods and cyanide leaching. [OXIDE ZONE]

2. Native copper and gold in saprolite, largely recoverable by gravity methods. [OXIDE ZONE]

3. Chalcocite (a rich form of copper sulphide) dominant with gold, recoverable by conventional flotation. [SULPHIDE ZONE]

4. Chalcopyrite (a copper sulphide iron mineral) dominant with gold and locally rich cobalt and molybdenum, recoverable by conventional flotation. [SULPHIDE ZONE]







I had forgotten that Kalkaroo also has Malachite, at West Kalkaroo. See diamond drill hole KKDD486 from metallurgical testing during 2018.



KKDD0486:
85 metres @ 2.73 g/t gold from 75 - 160 metres
73 metres @ 1.17 % copper from 87 - 160 metres
39 metres @ 261 ppm cobalt from 121 - 160 metres (in sulphide zone only)

Cheers

These are only my thoughts and it does not constitute investment advice. Before acting on any information you read and before making any financial or investment decisions, you should always consult your advisor(s) or other relevant professional experts.