Mine detail: Ophir

Previously called ''

<< Back to the map

Location

Lat / long: 37.83307, -107.8087

Resource(M)

Primary: Zinc, Gold, Lead, Copper, Silver
Ore: Chalcopyrite, Galena, Hematite, Magnetite, Pyrite, Sphalerite
Gangue: Barite, Calcite, Quartz

Production

Operation type: Unknown
Deposit type: Hydrothermal Vein
Production size: Large
Development status: Past Producer
First production started: 1878

Geology

Host rock:Silverton Volcanic Series;San Juan Formation;Telluride Conglomerate
Host type:Volcanic Breccia (Agglomerate)
Associated type:Diorite
Structure:Paradox Basin Of Southeastern Utah And Southwestern Colorado (Intracratonic Basin) Trending Northwest-Southeast Elongate Structure. Gypsum Valley Anticline, Dolores Anticline: Fold Axis Trending Northwest-Southeast, Series Of Northwest Trending Fractures From The Silverton Caldera, But The Most Productive Veins Trend Towards The West
Tectonic:Intracontinental Rift

References

MRDSMP90005
DEP10048780
Reference{Deposit:: U.S. BUREAU OF MINES, MINERALS YEARBOOK, 1932-1945.}{Deposit:: KOSCHMANN, A.H., AND BERGENDAHL, M.H., 1968, PRINCIPAL GOLD-PRODUCING DISTRICTS OF THE UNITED STATES: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 610, 283 P.}{Deposit:: FRIEDMAN, JULES D., AND HELER, JOAN S., TECTONIC TRENDS OF THE NORTHERN PART OF THE PARADOX BASIN, SOUTHEASTER UTAH AND SOUTHWESTERN COLORADO, AS DERIVED FROM LANDSAT MULTISPECTRAL SCANNER IMAGING AND GEOPHYSICAL AND GEOOGIC MAPPING: US. GEOLOGICAL SURVEY BULLETIN 200-C,D, 40 P.}{Deposit:: MOSIER, D.L., SINGER, D.A., AND SALEM, B.B., 1983, GEOLOGIC AND GRADE-TONNAGE INFORMATION ON VOLCANIC-HOSTED COPPER-ZINC-LEAD MASSIVE SULFIDE DEPOSITS: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 83-89, 78 P.}{Production:: USBM YB (1932-45)}
ReporterSachiko Tanikawa