Gunnison District

Occurrence in Gunnison county in Colorado, United States with commodities Gold, Silver, Copper, Zinc, Lead

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Public Land Survey System information
Commodities
Materials information
Mineral occurrence model information
Host and associated rocks
Nearby scientific data
Geologic structures
Controls for ore emplacement
Economic information about the deposit and operations
Mining district
Land status
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10014559
MRDS ID	D011384
Record type	District
Current site name	Gunnison District
Alternate or previous names	Patented Claims: Pure Gold, MS 8430, Boulginour, MS 10712, Golden Era, MS 10712, Gage, MS 10713, Hunter, MS 10713, W.C. Dillon, MS 10715, Syndicate, MS 10716, Golden Stair, MS 11268

Geographic coordinates

Geographic coordinates:	-106.91284, 38.47472 (WGS84)
Elevation	2597
Relative position	4.5 TO 5.5 MILES S 18 E TO 5.5 TO 6 MILES S 1 E FROM GUNNISON

Site location context

Political divisions (FIPS codes)

Gunnison(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Iris NW(quadrangle 1:24,000 scale)

Saguache(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tomichi(hydrologic unit)

Gunnison(hydrologic accounting unit)

Gunnison(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CO)

Bureau of Land Management CO BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country	State	County
United States	Colorado	Gunnison

Public Land Survey System information

Meridian	Township	Range	Section	Fraction	State
New Mexico	049N;049N;048N	001E;001W;001W	30,31;36;01		Colorado

Comments on the location information

DISTRICT LIES ON BOTH SIDES OF STUBBS GULCH AND SW ONTO DIVIDE BETWEEN STUBBS GULCH AND GOLD BASIN CREEK. DISTRICT IS ACCESSIBLE VIA ROAD UP GOLD BASIN CREEK AND STUBBS GULCH (INCLUDING TWO OF ITS UNNAMED TRIBUTARIES) SOUTH FROM GUNNISON; VIA ROAD WEST FROM COLORADO RTE 114. ELEV AND LAT-LONG GIVEN ARE FOR COMMON CORNER OF SECS. 30 AND 31, T49N, R1E AND SEC. 36, T49W, R1W. ; INFO FROM LAND.ST :1976

Commodities

Commodity	Importance
Gold	Primary
Silver	Primary
Copper	Secondary
Zinc Critical	Secondary
Lead	Secondary

Comments on the commodity information

METALS AND MINERALS LISTED ABOVE NOT DEFINITELY KNOWN IN THIS DISTRICT BUT ARE BASED ON PROBABLE SIMILARITY WITH THOSE IN GREEN MOUNTAIN DISTRICT.

Materials information

Materials	Type of material
Chalcopyrite	Ore
Galena	Ore
Sphalerite	Ore
Biotite	Gangue
Calcite	Gangue
Fluorite	Gangue
Quartz	Gangue
Sericite	Gangue
Tourmaline	Gangue

Mineral occurrence model information

Model code	184
USGS model code	28a
Deposit model name	Massive sulfide, kuroko
Mark3 model number	93

Host and associated rocks

Host or associated

Associated

Rock type

Plutonic Rock > Granitoid > Quartz Monzonite

Stratigraphic age (youngest)	Neoproterozoic
Stratigraphic age (youngest)	Neoproterozoic

Host or associated Associated

Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
Host or associated Associated

Rock type Plutonic Rock > Granitoid > Granite
Host or associated Host

Rock type Metamorphic Rock > Schist
Host or associated Host

Rock type Metamorphic Rock > Gneiss
Host or associated Host

Rock type Metamorphic Rock > Gneiss > Migmatite

Host or associated	Associated
Rock type	Plutonic Rock > Mafic Intrusive Rock > Diorite

Host or associated	Associated
Rock type	Plutonic Rock > Granitoid > Granite

Host or associated	Host
Rock type	Metamorphic Rock > Amphibolite
Rock unit name	Metamorphic Rocks--Amphibolite;Metamorphic Rocks--Quartz-Biotite Schist, Gneiss, And Migmatite
Rock description	Metamorphic Rocks--Amphibolite;Metamorphic Rocks--Quartz-Biotite Schist, Gneiss, And Migmatite

Nearby scientific data

(1)	-106.91284, 38.47472	ListMap

Economic information

Geologic structures

Type of structure	Regional
Structure description	Gunnison Uplift, San Juan Volcanic Field, West Elk Centers
Type of structure	Local
Structure description	Gunnison Gold Belt, Iris Syncline, Unnamed Anticline

Controls for ore emplacement

Quartz Veins Cutting Amphibolite And Metasediments

Economic information about the deposit and operations

Development status	Occurrence
Commodity type	Metallic
Deposit size	Small
Significant	Yes

Mining district

District name	Gunnison District

Land status

Ownership category	Private

Comments on the workings information

SEVERAL SHAFTS OF UNKNOWN DEPTH; AT LEAST ONE TUNNEL OF UNKNOWN EXTENT; SURFACE PROSPECTS

Comments on development

EARLY HISTORY OF DISTRICT LARGELY UNKNOWN. DISCOVERIES AND EARLY MINING IN GUNNISON GOLD BELT AREA LED TO ESTABLISHMENT OF SMALL MINING TOWNS OF DUBOIS, SPENCER, VULCAN, MIDWAY, AND CHANCE IN LATE 1880S. POST-1900 RECORDS INDICATE ONLY INTERMITTENT PRODUCTION FROM SEVERAL LARGER MINES, SUCH AS HEADLIGHT, OLD LOT, ANACONDA (GOOSE CREEK DISTRICT), CONTINENTAL (BEAVER CREEK DISTRICT), LUCKY STRIKE AND LULA (GREEN MOUNTAIN DISTRICT). CLAIMS IN GUNNISON DISTRICT WERE SURVEYED AND PATENTED IN 1894-98 PRINCIPALLY BY W.C. DILLON AND PURE GOLD MINING AND MILLING CO. COLORADO DIV. OF MINES RECORDS CITE NO PRODUCTION FROM DISTRICT.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	D011384
U.S. Bureau of Mines	Minerals Availability System	MAS	0080510359

Bibliographic references

Deposit

HEDLUND, D.C., AND OLSON, J.C., 1974, GEOLOGIC MAP OF THE IRIS NW QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1134.
Deposit

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.
Deposit

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.
Deposit

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.
Deposit

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.
Deposit

BLM MINERAL SURVEYS MS 8430, 10712, 10713, 10715, 10716, 11268

General comments

Subject category	Comment text
Deposit	DISTRICT LIES NW OF GREEN MOUNTAIN DISTRICT. COUNTRY ROCKS CONSIST OF METASEDIMENTARY ROCKS (SCHIST, GNEISS, AND MIGMATITE) CONTAINING LAYERS, LENSES, AND OCCASIONALLY THICK SILLS AND DIKES OF AMPHIBOLITE (METAMORPHOSED GABBRO, BASALT, OR ANDESITE). SEQUENCE IS INTRUDED BY GOLD BASIN QUARTZ DIORITE STOCK JUST SOUTH OF DISTRICT, AND QUARTZ VEINS PROBABLY RELATED TO STOCK CUT AMPHIBOLITE AND METASEDIMENTS. MOST OF DISTRICT LIES ON CREST AND SW LIMB OF PROMINENT NNW-PLUNGING ANTICLINE, WITH FOLIATION TRENDING GENERALLY N 45 E, 45 TO 80 NW. SEVERAL GRANITE DIKES CUT ACROSS FOLIATION AND TREND GENERALLY NW. NO DESCRIPTION OF TYPE OF MINERALIZATION HERE IS AVAILABLE, BUT IT IS BELIEVED TO BE POSTMETAMORPHIC, EPIGENETIC VEIN SIMILAR TO THOSE IN GREEN MOUNTAIN DISTRICT TO SE. THERE, VEINS CONSIST OF QUARTZ-PYRITE+/-BIOTITE+/-SERICITE+/-TOURMALINE+/-CALCITE+/-FLUORITE. DEPOSITS ARE SPATIALLY AND PROBABLY GENETICALLY RELATED TO GOLD BASIN STOCK TO SOUTH.
Deposit	BECAUSE DISTRICT COMPRISES ONLY SEVERAL PATENTED CLAIMS, FOR WHICH NO DESCRIPTIONS ARE AVAILABLE AND FROM WHICH NO PRODUCTION IS KNOWN, NO INDIVIDUAL RECORDS WERE PREPARED. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Subject category

Comment text

Deposit

DISTRICT LIES NW OF GREEN MOUNTAIN DISTRICT. COUNTRY ROCKS CONSIST OF METASEDIMENTARY ROCKS (SCHIST, GNEISS, AND MIGMATITE) CONTAINING LAYERS, LENSES, AND OCCASIONALLY THICK SILLS AND DIKES OF AMPHIBOLITE (METAMORPHOSED GABBRO, BASALT, OR ANDESITE). SEQUENCE IS INTRUDED BY GOLD BASIN QUARTZ DIORITE STOCK JUST SOUTH OF DISTRICT, AND QUARTZ VEINS PROBABLY RELATED TO STOCK CUT AMPHIBOLITE AND METASEDIMENTS. MOST OF DISTRICT LIES ON CREST AND SW LIMB OF PROMINENT NNW-PLUNGING ANTICLINE, WITH FOLIATION TRENDING GENERALLY N 45 E, 45 TO 80 NW. SEVERAL GRANITE DIKES CUT ACROSS FOLIATION AND TREND GENERALLY NW. NO DESCRIPTION OF TYPE OF MINERALIZATION HERE IS AVAILABLE, BUT IT IS BELIEVED TO BE POSTMETAMORPHIC, EPIGENETIC VEIN SIMILAR TO THOSE IN GREEN MOUNTAIN DISTRICT TO SE. THERE, VEINS CONSIST OF QUARTZ-PYRITE+/-BIOTITE+/-SERICITE+/-TOURMALINE+/-CALCITE+/-FLUORITE. DEPOSITS ARE SPATIALLY AND PROBABLY GENETICALLY RELATED TO GOLD BASIN STOCK TO SOUTH.

Deposit

BECAUSE DISTRICT COMPRISES ONLY SEVERAL PATENTED CLAIMS, FOR WHICH NO DESCRIPTIONS ARE AVAILABLE AND FROM WHICH NO PRODUCTION IS KNOWN, NO INDIVIDUAL RECORDS WERE PREPARED. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-JAN-1984	Schwochow, Stephen D.	Colorado Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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