California · Tuolumne County
Past Producer

Eagle - Shawmut

Tuolumne County, California, United States
Gold
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Materials
Ore mineralsGold, Pyrite
GangueAnkerite, Quartz
Geology
Host rockSlate,Schist
Associated rockPyroxenite
StructureSee Comments
AlterationPyroxenite Intrusive Has Been Sheared And Altered To Multiform Chlorite Schist And Subsequently Ankerized And Silicified. Chlorite Schist Sometimes Resembles Serpentine Schist Due To The Lusterous Green; In Places This Rock Has A Pseudomorphic Texture Much Like Serpentinized Peridotite But The Phenocrysts Instead Of Being Bastite Are Chlorite Embedded In A Fine-Grained Chlorite Matrix.
Economic & production
Development statusPast Producer
Identification
Deposit ID10077877
MRDS IDW025943
RegionNA
Data scoreB
Coordinates37.86714, -120.39656
References
KNOPF, A., 1929 , THE MOTHER LODE SYSTEM OF CAL.: U.S.G.S. PROF. PAPER 157 , P. 79TUCKER, W.B., 1914 , TUOLUMNE COUNTY: CMB REPT. 14 , P. 146