roca receptora esta carbonatada

02:21 Jan 16, 2020 

Suggested possible trans : the fault lie made it possible for the minerals to concentrate
in the contact area where the intrusive rock, meets the country rock, forming carbonaceous deposits.
There was claim on shale deposits in E Oregon, the shale was carbonized by sea water in the fault lines, dissolving pyrite (fools gold) and real cold, which redeposited as pyrite stars , of both gold and pyrite.
May look under carbonaceous gold, : https://www.tandfonline.com/doi/pdf/10.1080/0812009090355272... it says in part :Major gold mineralisation at Fosterville is younger than at the majority of auriferous quartz-reef-hosted deposits in the ... fold-related fault system in a series of shear zones. On the other ... carbonaceous matter as well as calcium phosphate.
(caronaceous usually comes from sedimentary transformation by water or heat, ryholyte is the burning **intrusive** hot water, and diluted magma, adding **carbon** to everything from chalk, shale can be hardened by redeposited hard water soluble quarts, pools of hot water in Owyhee county near hear brought up only marginals ores, most gold is hot water magma igneous **intrusions** at Idaho City, shale gold is poor.