Colorado · Gunnison, Saguache County
Past Producer

Green Mountain District

Gunnison, Saguache County, Colorado, United States
GoldSilverCopperZincLeadSeleniumTellurium
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold, Silver
SecondaryCopper, Zinc, Lead
TertiarySelenium, Tellurium
Commodity typeM
Deposit
Deposit sizeS
Ore controlQuartz Veins Associated With Lulu Fault And Gold Basin Stock And Cutting Metasediments And Amphibolite. Massive Sulfides Controlled By Original Depositional Layering In Submarine Volcanics And Exhalative Carbonates.
Materials
Ore mineralsChalcopyrite, Galena, Sphalerite
GangueBiotite, Calcite, Chlorite, Fluorite, Hematite, Limonite, Pyrrhotite, Sericite, Tourmaline
Geology
Host rockSchist,Amphibolite
Associated rockQuartz Monzonite,Diorite,Diabase · Quartz Diorite To Quartz Monzonite Of Gold Basin;Quartz Vein;Diabase Dikes
StructureGunnison Uplift, San Juan Volcanic Field, West Elk Centers, Gunnison Gold Belt, Iris Syncline, Lulu Fault, Gold Basin Stock
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
Last production1934
Identification
Deposit ID10014558
MRDS IDD011383
Alternate namesSt. Joe, MS 11293, Denver City, MS 11792, Paymaster, MS 11911, Dalore, MS 14457, Morning Star, MS 14457, James J. Corbett, MS 13157, Mammoth, MS 13897, Belle Valaisane, MS 13897, Hill Top No. 1, MS 14457, Hill Top No. 2, MS 14457, Hill Top No. 3, MS 14457, Carrie G., MS 14457, Robert H., MS 14457, Capital Prize, MS 14457, Indiana, MS 14457, Amazon, MS 14457, Baltimore Boy, MS 14457, Gold Dollar, MS 14736, Horse Shoe, MS 17122, Iris District, Patented Claims: Spring Placer, MS 9124, Lucky Strike, MS 9125, Good Record, MS 9126, High Five, MS 9419, Owego, MS 10065, Valley View, MS 10065, Dirigo No. 1, MS 10711, Dirigo No. 2, MS 10711, Tip Top, MS 10711, Mineral Hill Nos. 1-8, MS 10993, Iona, MS 11293, Veteran, MS 11293, North Star, MS 11293, Modoc, MS 17455., E.S., MS 14457, Only Chance, MS 17455
RegionNA
Data scoreB
Coordinates38.41694, -106.8309
References
AFIFI, A.M., 1981, STRATIGRAPHY, PETROLOGY, AND STRUCTURE OF PRECAMBRIAN METAVOLCANIC ROCKS IN THE IRIS DISTRICT, GUNNISON AND SAGUACHE COUNTIES, COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P. 287-292.AFIFI, A.M., 1981, PRECAMBRIAN GEOLOGY OF THE IRIS AREA, GUNNISON AND SAGUACHE COUNTIES, COLORADO: COLORADO SCHOOL OF MINES M.SC. THESIS T-2302.DROBECK, P.A., 1979, GEOLOGY AND TRACE ELEMENT GEOCHEMISTRY OF A PART OF THE GUNNISON GOLD BELT, COLORADO: COLORADO SCHOOL OF MINES M.SC. THESIS T-2251, P. 22-47.DROBECK, P.A., 1981, PROTEROZOIC SYNGENETIC MASSIVE SULFIDE DEPOSITS IN THE GUNNISON GOLD BELT, COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P. 279-286.HEDLUND, D.C., AND OLSON, J.C., 1981, PRECAMBRIAN GEOLOGY ALONG PARTS OF THE GUNNISON UPLIFT OF SOUTHWESTERN COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC, 32D FIELD CONF. GUIDEBOOK, P. 267-272.OLSON, J.C., 1976, GEOLOGIC MAP OF THE IRIS QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1286.SCHWARZ, T.E., 1906, REPORT ON THE DENVER CITY PROPERTY, SAGUACHE COUNTY, COLORADO: COLORADO STATE PLAN. COMM. UNPUB. REPT., 5 P.SHERIDAN, D.M., AND OTHERS, 1981, PRECAMBRIAN SULFIDE DEPOSITS IN THE GUNNISON REGION, COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P. 273-277.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.BLM MINERAL SURVEYS MS 9124, 9125, 9126, 9419, 10065, 10711, 10993, 11293, 11792, 11911, 13157, 13897, 14457, 14736, 17122, 17455