It's actually mold
Posted by RiverRat on April 01, 2003 at 14:46:03:
In Reply to: But what about those green rocks? posted by Bodie the Dog on April 01, 2003 at 11:13:33:
Sure it's not copper?? There were some other processes out there. I went to a mill site at the[name changed to keep out the yuppie scum] Mountains that used the chlorinization [sp??] process, there were some wild colors in the tailings pile. The original Virginia City mills used variations of the Mexican Patio process. The cyanide process superceeded most of these other processes.
I went to another cyanide plant in the [see comment above] Mountains, where most of the country rock was beautiful green epidote with almadine garnet. Beautiful mine dump. Chlorite (mineral) is also green. Guess I will have to go look for this mine when I'm in the country.
Great reference book: "Western Mining", by Otis E. Young, Jr., U of OK Press.