California · Tuolumne County
Past Producer

Grassely Group

Tuolumne County, California, United States
Chromium
⌖ Show on mapUSGS source ↗
Commodities
PrimaryChromium
Commodity typeM
Deposit
Deposit sizeS
Materials
Ore mineralsChromite
Geology
Host rockDunite
StructureSerpentinization Of Dunite, Extensive Shearing In Host Rock
Economic & production
Development statusPast Producer
First production1914
Last production1917
Identification
Deposit ID10043702
MRDS IDM100606
Alternate namesClaims: Last Chance, Morning Glory, May Faction, Lopez Lease 1918
RegionNA
Data scoreC
Coordinates37.90436, -120.50517
References
CATER, F.W. JR., 1948, CDMG BULL 134, PART 3, CHAPT. 1, P. 26, 27CDMG BULL 134, PT. 3, CHAPT. 1, P. 26, 27.