The Oro Fino is a gold mine located in San Bernardino county, California at an elevation of 2,251 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: 2,251 Feet (686 Meters)
Commodity: Gold
Lat, Long: 35.19917, -115.89056
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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.
Oro Fino MRDS details
Site Name
Primary: Oro Fino
Commodity
Primary: Gold
Location
State: California
County: San Bernardino
District: Solo
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert
Mineral Deposit Model
Not available
Orebody
Form: LENTICULAR
Structure
Type: L
Description: Ore Bodies Occur In East-Trending Belt, About 1200 Ft. In Length
Alterations
Not available
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: $50 AU/TON FROM STOPED AREA
Analytical Data: ORE MINEND FROM NE-TRENDING VEIN AVG. $9 AU/TON
Materials
Gangue: Quartz
Comments
Comment (Workings): 3 MAIN GROUPS OF WORKINGS, THE WEST, MIDDLE AND EXTENSION (EAST). 2500 FT. OF SHAFTS AND TUNNELS. PROSPECTED ALONG LENGTH OF ITS OUTCROP FOR 1500 FT. TUNNEL DRIVEN ON CROSS FRACTURE N25E 175 FT. TO MAIN VEIN, THEN 150 FT. N60E. THIS WORK EXPOSED ON ORE SHOOT 150 FT. LONG, AVG. 7 FT. THICK. RAISE APUT UP 87 FT. TO SURFACE 260 FT. FROM PORTAL. NUMEROUS CUTS AND SHALLOW SHAFTS FOR 1300 FT. NE ALONG TUNNEL. 1300 FT. NE OF MAIN TUNNEL IS A SHAFT 65 FT. DEEP, THERE IS A STOPE ON THE 30 FT. LEVEL, 60 FT. LONG, 6 FT. THICK, AND 30 FT. HIGH.
Comment (Commodity): ORE IS UP TO 75% FREE GOLD
Comment (Production): NO OTHER PRODUCTION RECORD FOUND
Comment (Deposit): SILICEOUS ORE SHOOTS, 4 TO 6 1/2 FT. THICK OCCUR ALONG FAULTED AND FRACTURED ZONES THAT ARE NOW DISCONTINUOUS. ORE SHOOTS COMMONLY BORDERED ON ONE SIDE BY A GOUGE THAT APPEARS TO CONSIST MOSTLY OF PULVERIZED DIKE MATERIAL.
Comment (Deposit): 4 CLAIMS FIRST PROSPECTED IN 1890'S ; INFO.SRC : 1 PUB LIT
Comment (Geology): FAULTED AND FRACTURED ZONES MAY REPRESENT OFFSET SEGMENTS OF A SINGLE ZONE. DISPLACEMENT OF EACH STEPPED SEGMENT AMOUNTS TO A FEW FEET. QUARTZITE (WEST PART), MICA SCHIST AND DOLOMITE (EAST PART). BASIC DIKES.
References
Reference (Deposit): WRIGHT, L.A., AND OTHERS, 1953, MINES AND MINERAL DEPOSITS OF SAN BERNARDINO COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 49, NOS. 1&2, P. 76-77
Reference (Deposit): TUCKER, W.B. AND SAMPSON, R.J., 1943, MINERAL RESOURCES, SAN BERNARDINO COUNTY, CALIFORNIA: CALIF. JOUR. MINES & GEOLOGY, V. 39, NO. 4, P. 457.
Reference (Production): WRIGHT (1953)
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
