Geyser Group

The Geyser Group is a silver and gold mine located in Dolores county, Colorado at an elevation of 8,760 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Geyser Group
Secondary: Unpatented Claims: Aviation
Secondary: Uncle Bim
Secondary: Blue Bird No. 2
Secondary: Wheel of Fortune

Commodity

Primary: Silver
Primary: Gold
Secondary: Lead
Secondary: Copper
Tertiary: Zinc

Location

State: Colorado
County: Dolores
District: Lone Cone (Dunton) District

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: San Juan N. F.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Frank And Albert Stampfel
Home Office: Rico, Co.
Years: 1932 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year Last Production: 1950
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Canyon Lands

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Not available

Structure

Type: R
Description: San Juan Uplift, Paradox Basin

Type: L
Description: Rico Dome, Dunton Syncline, Unnamed Faults

Alterations

Not available

Rocks

Name: Gabbro
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Gabbro
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Analytical Data

Analytical Data: ORE ASSAYED 2 TO 4 OZ/TON AG AND 0.4 OZ/TON AU

Materials

Ore: Argentite
Ore: Chalcopyrite
Ore: Galena
Ore: Pyrargyrite
Ore: Sphalerite
Ore: Polybasite
Ore: Pyrite
Gangue: Quartz

Comments

Comment (Deposit): MINE DEVELOPED IN CUTLER AND DOLORES FM RED BEDS ON PROBABLE VEIN ASSOCIATED WITH FAULT SITUATED WELL BEYOND BUT SUBPARALLEL TO EMMA FAULT AND GRABEN, AND TRENDING N 45 W, TERMINATING ON CROSS FAULT TRENDING GENERALLY N 75 E. H2S-BEARING SPRING SITUATED ON NW-TRENDING FAULT AT MINE, AND THERMAL SPRING LOCATED AT INTERSECTION OF TWO FAULTS.

Comment (Commodity): COMMODITIES AND ORE MINERALS LISTED NOT DEFINITELY KNOWN BUT INFERRED ON BASIS OF PROBABLE SIMILARITY WITH EMMA AND SMUGGLER MINES.

Comment (Production): PROBABLE PARTIAL PRODUCTION RECORD. 1950 IS ONLY DEFINITE YEAR IN WHICH PRODUCTION WAS REPORTED.

Comment (Workings): CDM REPORTS DESCRIBE WORKINGS AS LOWER TUNNEL DRIVEN AS CROSSCUT GENERALLY SE FOR 75 FT, THENCE AS 150-FT DRIFT WITH TWO INCLINED RAISES TO UPPER TUNNEL. UPPER TUNNEL LIE 35 FT HIGHER THAN LOWER TUNNEL, DRIVEN 225 FT AS DRIFT. ALSO, OLDER CROSSCUT 40 FT WEST OF LOWER TUNNEL, OPEN CUTS AND TRANCHES, AND SMALL FLOTATION MILL.

Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). MINE LIES ON SOUTH SIDE OF WEST DOLORES RIVER AND ON SOUTH SIDE OF GEYSER CREEK ABOUT 2 MILES BELOW DUNTON. ELEV AND LAT-LONG GIVEN ARE FOR LOWER TUNNELS. ; INFO FROM LAND.ST :1975

References

Reference (Deposit): BUSH, A.L., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE DOLORES PEAK QUADRANGLE, DOLORES AND SAN MIGUEL COUNTIES, COLORADO: USGS MAP GQ-536.

Reference (Deposit): BASTIN, E.S., 1922, SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO: USGS BULL. 735-D, P. 116-129.

Reference (Deposit): COLORADO DIV. MINES INF. REPTS.

Reference (Production): USBM MINERALS YEARBOOK 1950

Colorado Mining Photos

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.