These Kambalda Style deposits can be dominated by pyrrhotite. Obviously there is no visuals for Nickel sulphides but there maybe low grade Nickel in assay results.
It isn't every day that you hit these deposits on the first drill hole. There are sulphides there that may be associated with Nickel and concentrated in other parts of the sulphide body. At least they are shales.
This article is worth a read; https://sgc.com.au/wp-content/uploads/2016/06/cosmos-craven-et-al.pdf
From the Abstract;
Cosmos is a typical Kambalda-style, komatiite-hosted, highly conductive and magnetic, massive pyrrhotite-pentlandite sulphide deposit
Early days.
These Kambalda Style deposits can be dominated by pyrrhotite....
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