Mine detail: Green Mountain Mine

Previously called 'Copper Boy Mine'

Location:	Fremont County, Colorado, United States, North America
Lat / long:	38.36751, -105.39474
dep_id:	10013371
mrds_id:	D009628
Commodity type:	metallic
Major mineral:	Copper
Minor mineral:	Silver, Gold
Trace mineral:	Zinc, Molybdenum
Operation type:	Underground
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Chalcopyrite, Chrysocolla, Covellite, Cuprite, Gahnite, Gold, Hydrozincite, Malachite, Silver, Sphalerite
gangue:	Garnet, Pyrite, Quartz
work_type:	Unknown
model:	271: Stratabound Precambrian sulfide, Colorado and Wyoming
alteration:	Altered Biotite Gneisses; Kaolinization
ore_ctrl:	Faults, Fault Intersections; Shear Zones
Reporter:	Collins, Donna B.
hrock_unit:	Migmatitic Gneiss
hrock_type:	Schist,Gneiss,Amphibolite
arock_unit:	Granodiorite
arock_type:	Quartz Monzonite,Diorite,Granite
Structure:	Northern Wet Mountains, Canon City Embayment, Thirtynine Mile Volcanic Field, Slickensides Strike N 40 W; Green Mountain Fault (Trends Nw); Ilse Fault
tectonic:	Central Cordillera (Southern Rocky Mountains)
Year first produced:	1925
yr_lst_prd:	1954
disc_yr:	1925
References:	Deposit:: COKER, R. J., 1982, MINERAL RESOURCES OF THE ARKANSAS CANYON PLANNING UNIT WITH SPECIAL EMPHASIS ON THE FORMER GRAPE CREEK WILDERNESS STUDY AREAS AND THE MCINTYRE HILLS WILDERNESS STUDY AREA: US BLM MINERAL REPORT, P. 30-34 Deposit:: TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A., AND EPIS, R. C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1: 62,500. Deposit:: RAYMOND, W. H. AND SHERIDAN, D. M., 1980, DATA ON SOME STRATABOUND PRECAMBRIAN DEPOSITS CONTAINING ZINC, COPPER, LEAD, SILVER, AND GOLD IN THE ROYAL GORGE 15-MINUTE QUADRANGLE, COLORADO: USGS OFR 80-833, 8 P. Deposit:: HEINRICH, E. W., 1981, PRECAMBRIAN TUNGSTEN AND COPPER-ZINC SKARN DEPOSITS OF SOUTH-CENTRAL COLORADO: CGS RESOURCE SERIES 21, P. 81-82. Deposit:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey. Deposit:: Sheridan, D.M., Raymond, W.H., Taylor, R.B., and Hasler, J.W., 1990, Metallogenic map of stratabound exhalative and related occurrences in Colorado: U.S. Geological Survey Miscellaneous Investigations Series Map I-1971, scale 1:1,000,000. Production:: COKER, 1982