The Oso is a gold mine located in Mariposa county, California.
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.
Primary Mineral: Gold
Lat, Long: 37.57222, -120.11139
Active Mining Claims
Claim data is for Mines level premium members.
Oso MRDS details
Site NamePrimary: Oso
Operation Category: Producer
Operation Type: Unknown
Years of Production:
PhysiographyGeneral Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
|Comment: ACCORDING TO A REPORT IN 1868, ABOUT $400,000 WAS TAKEN FROM THE SHAFT. LAST ACTIVE IN 1906, PRODUCING 7.85 TONS OF ORE YIELDING $164.02 OR AN AVERAGE OF $20.91 PER TON.|
|Comment: SHAFT 50 FT. DEEP AND 7 FT. WIDE.|
|Comment: FORMER LAS MARIPOSAS GRANT MINE - PRESENT OWNERSHIP NOT DETERMINED.|
Reference Category: Deposit
Reference: CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN.-APRIL, 1957, P. 294