Homestake mineraization ...Homestake mineraization is Banded Iron Formation ( BIF) or iron-formation-hosted gold (“IFG”) deposit.
There are not too many of them.
Homestake was the largest ever know, some 49,000,000 ozs
A jr gold peer has the same geology with their project.
Guyana Goldstrike's Marudi project.
Gold mineralization at the Marudi Property is regarded as being related to iron-formation-hosted gold (“IFG”) deposits that occur in other cratonic greenstone belts (e.g. Lupin, Musselwhite, in Canada, and
Homestake in the western U.S.)
These deposits can be remarkably large with sizeable gold production. They have a strong association between gold and iron sulfide minerals, the presence of gold bearing quartz veins and structures, the occurrence of deposits in structurally complex terranes, and the lack of lead and zinc enrichment.
In stratiform IFG deposits much of the gold is uniformly disseminated in stratigraphically continuous horizons in well-laminated units of cherty, sulfide-rich BIF that are conformably interlayered with gold and sulfide poor BIF and clastic sedimentary rocks. Iron sulfide minerals are deformed and metamorphosed but oxide BIF is lacking. Late quartz veins or shear zones are volumetrically significant but their control on gold and iron-sulfide is unclear. Arsenic bearing minerals, if present are generally restricted to alteration zones immediately proximal to late quartz veins.
https://en.wikipedia.org/wiki/Homestake_Mine_(South_Dakota)