TY  - RPRT
TI  - Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado
AU  - Nora K. Foley
AU  - Stanton W. Caddey
AU  - Craig B. Byington
AU  - David M. Vardiman
PY  - 1993
DO  - 10.3133/pp1537
UR  - https://pubs.usgs.gov/publication/pp1537
ID  - pp1537
ER  -