Mammoth Good Hope Mine

The Mammoth Good Hope Mine is a gold, silver, tellurium, and sulfur mine located in Gunnison county, Colorado at an elevation of 9,058 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

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Site Name

Primary: Mammoth Good Hope Mine
Secondary: Good Hope Mine
Secondary: Good Hope, Mammoth Chimney

Commodity

Primary: Gold
Primary: Silver
Primary: Tellurium
Primary: Sulfur
Secondary: Copper
Tertiary: Zinc
Tertiary: Antimony
Tertiary: Vanadium
Tertiary: Bismuth
Tertiary: Arsenic

Location

State: Colorado
County: Gunnison
District: Domingo (Vulcan) District

Land Status

Land ownership: Private
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.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Diamond C Mining And Milling Co.
Home Office: Gunnison Co.
Years: 1937 -

Production

Year: 1929
Description: Ap_Grade: ^2.34 Oz/Ton Au, 6.04 Oz/Ton Ag, 1 % Zn, 4 % Fe, 0.7 % S
Year: 1925
Description: Ap_Grade: ^25 % Cu
Year: 1919
Description: Ap_Grade: ^2.5 Oz/Ton Au, 12 Oz/Ton Ag

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1898
Year Last Production: 1930
Discovery Year: 1898
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Gunnison Uplift; San Juan Volcanic Field

Type: L
Description: Gunnison Gold Belt

Alterations

Not available

Rocks

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Analytical Data: 1929 ORE SHIPMENT FROM GOOD/HOPE/VULCAN ASSAYED 2.34 OZ/TON AU, 6.04 OZ/TON AG, 1 % ZN, 4 % FE, 0.7 % S. CDM INSPECTORS REPT. (9/7/28) CITED ORE CONTAINING 0.5 OZ/TON AU, 6 OZ/TON AG, 7 % ZN, 3 % CU. SULFUR ORE CONTAINED 80 %

Materials

Ore: Sylvanite
Ore: Petzite
Ore: Sulfur
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Tetradymite
Ore: Rickardite
Gangue: Limonite
Gangue: Jasper
Gangue: Roscoelite

Comments

Comment (Deposit): VULCAN CONSOLIDATED MINES CORP. PROPERTIES INCLUDED HUMBOLDT CLAIM (N2 NE SW SEC. 07; 38-20-34N, 107-00-41W); MILL SITE CLAIM (S2 SW NE SEC. 07; 38-20-39N, 107-00-20W); WAR EAGLE, HUMMING BIRD, ROSE BUD, AND IRON CLAD CLAIMS (S2NE SEC. 07 AND W2 W2 SW NW SEC. 08; 38-20-52N, 107-00-02W) ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Development): MAMMOTH GOOD HOPE AND VULCAN MINES ARE PRINCIPAL MINES IN DISTRICT, HAVING PRODUCED FROM 1898 TO 1904 AND INTERMITTENTLY THRU 1930. SULFUR WAS PRODUCED IN 1907. A 40-TON MATTE SMELTER WAS OPERATED ON SITE FOR A WHILE TO TREAT ORE. FROM 1916 TO 1926 GOOD HOPE MINE WAS OWNED BY GOOD HOPE MINING AND REDUCTION CO., WHOSE PRINCIPAL WAS ONE DR. WEISS (PRESUMABLY FOR WHOM THE TELLURIDE WEISSITE WAS NAMED). VULCAN PROPERTY WAS OWNED BY J.H. HIMEBAUGH. IN 1928 VULCAN, GOOD HOPE AND OTHER CLAIMS (HUMBOLDT, MS 16392; MILL SITE, MS 19920; WAR EAGLE, HUMMING BIRD, ROSE BUD, IRON CLAD, MS 10910) WERE CONSOLIDATED AND OPERATED BY VULCAN CONSOLIDATED MINES CORP. LAST REPORTED PRODUCTION WAS IN 1930, BUT ASSESSMENT WORK WAS CONDUCTED IN 1937 BY DIAMOND C MINING AND MILLING CO.

Comment (Workings): MINE DEVELOPED BY 735-FT-DEEP SHAFT WITH LEVELS DRIVEN AT 100-FT INTERVALS. LEVEL 1 HAS 500-FT DRIFT EAST AND 100-FT DRIFT WEST (OF SHAFT). LEVEL 2 HAS 550-FT DRIFT EAST AND 100-FT DRIFT WEST. LEVEL 3 HAS 600-FT DRIFT EAST. LEVEL 4 NOT OPENED BUT EARLIER REPORT CITES 60-FT DRIFT WEST OF SHAFT. LEVEL 5 HAS 600-FT DRIFT EAST. LEVEL 6 (PRINCIPAL WORKING LEVEL) HAS 200-FT DRIFT EAST WITH STOPES AND 25-FT WINZE SUNK ON VEIN. LEVEL 7 HAS 50-FT DRIFT EAST. ABOUT 300 FT WEST OF THE GOOD HOPE WORKINGS IS A 240-FT-DEEP CAVED SHAFT.

Comment (Production): PARTIAL PRODUCTION RECORD FOR COMBINED MAMMOTH GOOD HOPE AND VULCAN MINES. COLO. DIV. MINES CITES PRODUCTION FOR 1916 AND 1918 BUT NO FIGURES WERE INCLUDED. PRODUCTION FIGURES FOR 1894 TO 1916 NOT AVAILABLE. PRODUCTION FOR 1925 CITED ACTUALLY AS CEMENT COPPER RATHER THAN CONCENTRATES. IN ADDITION TO MATTE SMELTER PROCESSING OF ORE AND DUMP MATERIAL, NELSON REPORTS TREATMENT OF MINE WATER LEACHED FROM OLD STOPES TO RECOVER CU BY PRECIPITATION ON SCRAP IRON.

Comment (Location): ON DIVIDE BETWEEN CAMP CREEK AND LITTLE CAMP CREEK 0.35 MILE SE OF VULCAN, ABOUT 700 FT WEST OF VULCAN MINE ; INFO FROM LAND.ST :(1976)

Comment (Commodity): TETRADYMITE (BI2TE2S) WAS NOT DEFINITELY RECOGNIZED BUT INFERRED ON THE BASIS OF ANALYSES OF NATIVE TE, RICKARDITE, AND ARSENOPYRITE. VULCAN AND MAMMOTH GOOD HOPE MINES ARE TYPE LOCALITIES FOR RICKARDITE AND WEISSITE. PETZITE PROBABLY IS THE PRINCIPAL GOLD-BEARING MINERAL. THE NEW TELLURIDE, VULCANITE (CUTE), WAS IDENTIFIED CIRCA 1960. GOOD HOPE MINE IS ONLY COLORADO OCCURRENCE OF BERTHIERITE (FESB2S4). ROSCOELITE NOT DEFINITELY IDENTIFIED BUT INFERRED ON BASIS OF ASSOCIATION WITH TELLURIDES.

Comment (Deposit): ALSO DESCRIBED AS A CHIMNEY, MAMMOTH GOOD HOPE/VULCAN DEPOSIT IS QUARTZ VEIN TRENDING N 87 W, 85 NE AND APPROX. PARALLEL TO FOLIATION OF ENCLOSING QUARTZ-CHLORITE AND QUARTZ-SERICITE SCHIST (IN FELSITE UNIT OF DUBOIS GREENSTONE). VEIN REPLACES SCHIST AND ORE GRADES INTO SCHIST WITHOUT SHARP CONTACT. AT DEPTH OF ABOUT 100 FT IN SULPHUR SHAFT IS A 12- TO 20-FT-THICK NATIVE SULFUR ZONE THAT GRADES DOWNWARD INTO LOOSE "QUICKSAND" IRON PYRITE, THENCE INTO SOLID MASSIVE PYRITE. FORMATION OF NATIVE SULFUR MAY HAVE RESULTED FROM DOWNWARD DESULFURIZATION OR OXIDATION OF PYRITE OR BY PRECIPITATION FROM ASCENDING SULFURATED HYDROGEN GASES.

References

Reference (Deposit): LAKES, ARTHUR, 1898, ORES OF THE VULCAN MINE: MINES AND MINERALS, V. 18, JULY, P. 562-563

Reference (Production): COLO. DIV. MINES ANNUAL OPERATOR REPORTS

Reference (Deposit): OLSON, J. C., STEVEN, T. A., AND HEDLUND, D. C., 1975, GEOLOGIC MAP OF THE SPRING HILL CREEK QUADRANGLE, SAGUACHE COUNTY, COLORADO: USGS MAP MF-713

Reference (Deposit): HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178

Reference (Deposit): BLM MINERAL SURVEY MS 12454 AND 12456

Reference (Deposit): SHARPS, T.I., 1965, SULFUR DEPOSITS OF COLORADO: COLORADO SCHOOL OF MINES MINERAL INDUSTRIES BULL., V. 8, NO. 6 &&

Reference (Deposit): COLO. DIV. MINES ANNUAL OPERATOR REPORTS AND INSPECTORS REPORTS. &&

Reference (Deposit): NELSON, A.P., NO DATE , MINING DISTRICTS, PRODUCING MINES AND PROSPECTIVE PROPERTIES (OF GUNNISON CO.): COLO. STATE PLAN. COMM. UNPUB. REPT. &&

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