The Fourth of July Claim is a chromium mine located in Napa 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: Chromium
Lat, Long: 38.71639, -122.45056
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Fourth of July Claim MRDS details
Site NamePrimary: Fourth of July Claim
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
PhysiographyGeneral Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
|Comment: FIFTEEN TONS OF ORE HAD BEEN MINED.|
|Comment: OPEN CUT.|
|Comment: ALTHOUGH THE ORE APPEARED TO BE MASSIVE, IT WAS SAID TO ASSAY ONLY 42.2% CR2O3.|
Reference Category: Deposit
Reference: CALIF. BULL. 134, PT. 2, CHAPTER 1, DEC. 1946, P. 23