California · Butte County
Past Producer
Helmke Occurrence
Butte County, California, United States
Chromium
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USGS source ↗
Commodities
Primary
Chromium
Commodity type
M
Deposit
Deposit size
S
Orebody form
LENSE
Materials
Ore minerals
Chromite
Geology
Host rock
Serpentinite
Economic & production
Development status
Past Producer
Identification
Deposit ID
10028401
MRDS ID
M005350
Region
NA
Data score
D
Coordinates
39.80265, -121.62162
References
CALIF. DIV. OF MINES: J. VOL. 45 #3, P. 444 & 421