I have gold in (chuncks of) manganese. Not obvious, but heating with torch results in gold beads. Don't know if crushing, smelting (borax, soda ash, silica as flux) is the best way to extract gold or if there are other preferred approaches. Would be appreciated if someone could point me to good reference material or provide experience-based recommendations for processing this stuff.
Some of the gold bearing manganese is pretty clean found in layers in rocks. Easy to crush. Much is mixed with (iron???) sulfides. Nasty stuff when roasted. If it didn't have gold, I wouldn't touch the stuff.
Some of the gold bearing manganese is pretty clean found in layers in rocks. Easy to crush. Much is mixed with (iron???) sulfides. Nasty stuff when roasted. If it didn't have gold, I wouldn't touch the stuff.