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Gold Basin area

US / CO
38.44083, -106.89451View on MapOpen in Google Maps
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About this location

Gold Basin area is a known mineral occurrence in Gunnison, Colorado, documented by the USGS Mineral Resources Data System. USGS records describe a Vein deposit hosted in Metamorphic Rocks--Schist, Gneiss, And Migmatite (Quartz Monzonite, Diorite, Schist, Gneiss, Migmatite), within the Central Cordillera (Southern Rocky Mtns) setting. Reported specimens include Azurite, Biotite, Calcite, Chalcopyrite, Chrysocolla, Copper; logged ore minerals are Chalcopyrite, Galena, Sphalerite; gangue is recorded as Biotite, Calcite, Fluorite, Quartz, Sericite, Tourmaline. The site was discovered in 1886.

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Found Here

AzuriteBiotiteCalciteChalcopyriteChrysocollaCopperFluoriteGalenaGoldMalachiteQuartzSericiteSilverSphaleriteTourmaline

Geology and deposit

Deposit type
Vein
Host rock
Metamorphic Rocks--Schist, Gneiss, And Migmatite — Quartz Monzonite, Diorite, Schist, Gneiss, Migmatite
Associated rock
Quartz Diorite To Quartz Monzonite Of Gold Basin — Quartz Monzonite, Diorite, Diabase
Tectonic setting
Central Cordillera (Southern Rocky Mtns)
Ore minerals
ChalcopyriteGalenaSphalerite
Gangue minerals
BiotiteCalciteFluoriteQuartzSericiteTourmaline
Structure

Gunnison Uplift, San Juan Volcanic Field, West Elk Centers, Gunnison Gold Belt, Iris Syncline, Unnamed Anticline, Gold Basin Stock

Ore control

Quartz Veins Cutting Igneous And Metamorphic Rocks

Mining history

Status
Occurrence
Discovered
1886

Records and references

Cited references

HEDLUND, D.C., AND OLSON, J.C., 1974, GEOLOGIC MAP OF THE IRIS NW QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1134. OLSON, J.C., 1976, GEOLOGIC MAP OF THE IRIS QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1286. 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. 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. 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. 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. BLM MINERAL SURVEY MS 1984

Data: USGS Mineral Resources Data System, record 10014557view the source record

Difficulty

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Location on Map

Coordinates: 38.44083, -106.89451

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Southwest Treasure Hunter's Gem and Mineral Guide

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