The Bonnybel Mine is a silver, lead, and zinc mine located in Pitkin county, Colorado at an elevation of 9,226 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: 9,226 Feet (2,812 Meters)
Commodity: Silver, Lead, Zinc
Lat, Long: 39.17611, -106.82028
Map: View on Google Maps
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Bonnybel Mine MRDS details
Site Name
Primary: Bonnybel Mine
Secondary: Claims: Bonnybel
Secondary: Chloride
Commodity
Primary: Silver
Primary: Lead
Primary: Zinc
Location
State: Colorado
County: Pitkin
District: Aspen (Roaring Fork) 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: C. E. Anderson And Frank Yates
Years: 1925 -
Owner Name: Blain Bray And Louis Jessen
Years: 1925 -
Production
Year: 1922
Description: Ap_Grade: ^11.1 Oz/Ton Ag, 4 % Pb
Year: 1925
Material type: ORE
Description: Ap_Grade: ^12 Oz/Ton Ag, 16 % Pb, 3 % Zn, 6 % Fe, 2 % S, 28 % Insol
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1900
Year Last Production: 1925
Discovery Year: 1880
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
Form: IRREGULAR
Structure
Type: R
Description: Sawatch Uplift, Central Colorado Trough, Piceance Basin, White River Uplift, Elk Uplift
Type: L
Description: Silver Fault, Contact Fault, Aspen Mountain Syncline, Bonnybel Fault, Chloride Fault
Alterations
Alteration Type: L
Alteration Text: Marblization Of Dolomite Near Porphyry Sheets
Rocks
Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene
Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian
Analytical Data
Analytical Data: ORE SHIPMENTS IN 1922 AND 1925 CONTAINED 11 TO 12 OZ/TON AG, 4 TO 16 % PB, 3 % ZN, 6 % FE, 2 %
Materials
Ore: Silver
Gangue: Barite
Comments
Comment (Location): IN ASPEN MTN AREA ON RIDGE BETWEEN SPAR GULCH AND VALLEJO GULCH. ELEV FROM SPURR (1898), LAT-LONG FROM BRYANT (1972) ; INFO FROM LAND.ST :(1980)
Comment (Production): PARTIAL PRODUCTION RECORD
Comment (Workings): SEVERAL TUNNELS; APPARENTLY ONE SHAFT SUNK TO 80 FT DEPTH, CONNECTING WITH ONE TUNNEL AT 20 FT. FROM (2D) LEVEL AT BOTTOM OF SHAFT, 90-FT WINZE SUNK TO 3D LEVEL, WHICH IS 140-FT CROSSCUT WESTWARD WITH DRIFT ON INTERNAL FAULT AT 90 FT AND 2D WINZE AT 115 FT. AT BOTTOM OF THIS 70-FT WINZE IS 110-FT WESTWARD CROSSCUT TUNNEL. THIRD LEVEL CONTINUES WEST ON 30-FT DECLINE TO INTERMEDIATE LEVEL 130 FT LONG AND TERMINATING IN 30-FT WINZE. HIGHER WORKINGS DEVELOP ORE FARTHER NW IN FAULT BLOCK AND TO SW BEYOND CHLORIDE FAULT. BONNYBEL WORKINGS CONNECTED TO LOWER DURANT TUNNEL AND WORKINGS VIA VISINO INCLINE.
Comment (Deposit): DEPOSIT LIES IN SMALL NW-TRENDING FAULT BLOCK BOUNDED ON NE BY BONNYBELL FAULT, ON SW BY CHLORIDE FAULT, AND ON NW BY NE-TRENDING SILVER FAULT AND CUT BY MANY SMALL INTERNAL FAULTS. BELDEN SHALE AND PORPHYRY DIRECTLY OVERLIE LOWER LEADVILLE DOLOMITE MEMBER. PORPHYRY OCCURS AS LARGE CROSS-CUTTING DIKE AND SMALL INTERBEDDED SHEETS IN DOLOMITE, MARBLIZING THE DOLOMITE AROUND CONTACTS; MINE IS ONLY PLACE IN DISTRICT WHERE PORPHYRY WAS SEEN TO CUT BEDS OLDER THAN BELDEN. OXIDIZED ORE FOUND IN IRREGULAR SHOOTS PARALLEL WITH MAIN FAULTS AND HAVING NW TRENDS, DIPPING STEEPLY SW. OCCURRENCE IS SIGNIFICANT IN DISTRICT AS IT IS ONLY PLACE WHERE ALL OF HOST ROCK WAS TRANSFORMED INTO LOW-GRADE ORE.
References
Reference (Deposit): BRYANT, BRUCE, 1971, GEOLOGIC MAP OF THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP GQ-933.
Reference (Deposit): BRYANT, BRUCE, 1972, MAP SHOWING MINES, PROSPECTS, AND AREAS OF SIGNIFICANT SILVER, LEAD, AND ZINC PRODUCTION IN THE ASPEN QUADRANGLE, PITKIN COUNTY, COLORADO: USGS MAP I-785-D
Reference (Deposit): BLM MINERAL SURVEYS MS 1387, 3699
Reference (Production): COLO. DIV. MINES ANN. OPERATOR REPTS.
Reference (Deposit): SPURR, J.E., 1898, GEOLOGY OF THE ASPEN DISTRICT, COLORADO: USGS MON. 31, P. 151-153, PL. 40.
Colorado Mining Photos
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