The Johnny Bull Mine is a copper and silver mine located in Dolores county, Colorado at an elevation of 11,699 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
Elevation: 11,699 Feet (3,566 Meters)
Commodity: Copper, Silver
Lat, Long: 37.71694, -108.09028
Map: View on Google Maps
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Johnny Bull Mine MRDS details
Site Name
Primary: Johnny Bull Mine
Secondary: Patented Claims: Johnny Bull, MS 596
Secondary: Spanking Jack, MS 7047
Secondary: Last Chance, MS 7047
Commodity
Primary: Copper
Primary: Silver
Secondary: Gold
Tertiary: Lead
Tertiary: Tellurium
Tertiary: Bismuth
Location
State: Colorado
County: Dolores
District: Pionner (Rico) 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: Gold Anchor Mining Co.
Home Office: Rico, Co.
Years: 1937 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1890
Discovery Year: 1879
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 replacement
Orebody
Not available
Structure
Type: R
Description: San Juan Uplift, Paradox Basin
Type: L
Description: Rico Dome, Calico Peak Stock, Calico Peak Anticline
Alterations
Alteration Type: L
Alteration Text: Kaolinitization; Silicification; Shallow Bit Intense Near-Suface Oxidation Of Ores
Rocks
Name: Latite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic
Name: Latite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic
Name: Latite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene
Analytical Data
Analytical Data: MARRS' (1925) LOW-GRADE ORE SAMPLES FROM SEVERAL DUMPS AND OUTCROPS AVERAGED 0.13 OZ/TON AU, 1.4 OZ/TON AG, 0.2% PB,, 0.3% CU. MEDIUM-GRADE ORE AVERAGED 0.4 OZ/TON AU, 16.2 OZ/TON AG, 8.2% PB, 6.4% CU. HIGH-GRADE ORE (WITH VISIBLE AU) AVERAGED $4000/TON AU (194 OZ/TON AU AT $20.65/OZ,), $500/TON AG, AND $20/TON PB, CU, FE, AND S.
Materials
Ore: Gold
Ore: Enargite
Ore: Pyrite
Gangue: Kaolinite
Gangue: Quartz
Comments
Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). NEAR HEAD OF JOHNNY BULL CREEK ON JOHNNY BULL MTN. 0.45 MILES NNW OF CALICO PEAK. ELEV AND LAT-LONG GIVEN ARE FROM PRATT AND OTHERS (1969). ; INFO FROM LAND.ST :1975
Comment (Workings): 123-FT VERTICAL SHAFT CONNECTED TO 190-FT TUNNEL DRIVEN EAST FROM WEST SIDE OF RIDGE. WORKINGS ALSO MAY INCLUDE 215-FT TUNNEL DRIVEN NE (POSSIBLY SAME TUNNEL AS ABOVE) WITH 135-FT RAISE TO GOLD ANCHOR WORKINGS.
Comment (Reserve-Resource): MARRS (1925)
Comment (Development): MARRS (1925) NOTES DISCOVERY OF MINES IN 1879 OR 1880 BY AN ITALIAN WHO PRESUMABLY FOUND OXIDIZED ORFE AT SURFACE. CLAIM BOUNDARY DISPUTE HELD PROPERTY IDLE AND IN LITIGATION UNTILL 1980 AFTER WHICH VARIOUS LEASEES HIGH-GRADED ORES AND CONDUCTED NO COORDINATED AT ORDERLY AND COMPLETE DEVELOPMENT OF DEPOSITS.
Comment (Deposit): ON NORTH SIDE OF RICO DOME, HORNBLENDE LATITE PORPHYRY AND BASALT DIKES INTRUDE CUTLER FM (PERMIAN) AND OVERLYING DOLORES FM (TRIASSIC). CALICO PEAK STOCK (PLIOCENE) AND RELATED DIKES CUT CUTLER FM. CALICO PEAK ANTICLINE PLUNGES WNW FROM WEST SIDE OF STOCK. MINE LOCATED NEAR SOUTH END OF NORTH-TRENDING LATITE DIKE RADIAL FROM CALICO PEAK STOCK. DEPOSIT BELIEVED TO HAVE BEEN CHIMNEY-LIKE, LOCALIZED AT FRACTURE INTERSECTION IN STRONGLY SILICIFIED AND PYRITIZED SANDSTONE; SILICIFICATION EXTENDED INTO COUNTRY ROCK, ESPECIALLY ALONG BEDDING PLANES. BELOW MAIN ORE BODY, SOME ORE FOUND IN SMALL NORMAL FAULT STRIKING N 25 W AND DIPPING NE.
References
Reference (Deposit): MARRS, G.O., 1925, REPORT ON THE GOLD ANCHOR GROUP OF MINES, PIONEER MINING DISTRICT, DOLORES COUNTY, COLORADO: UNPUB. ENG. REPT., 8 P.
Reference (Deposit): BLM MINERAL SURVEYS MS 596, 7047
Reference (Deposit): COLORADO DIV. MINES INF. REPTS.
Reference (Deposit): RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 357-358.
Reference (Deposit): MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723.
Reference (Deposit): PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.
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