Commodities
PrimaryGold
SecondaryIridium, Osmium, Platinum
Commodity typeM
Deposit
Deposit typeStream Placer
Model119: Placer Au-PGE
Deposit sizeM
Orebody formTABULAR
Ore controlStream Hydraulics
Geology
Host rockGravel · Laguna Formation (Silt, Sand, Gravel)
Tectonic settingBase Of Sierra Nevada Foothills
Economic & production
Development statusPast Producer
First production1848
Last production1962
Discovery year1860
Identification
Deposit ID10103627
MRDS IDM045265
Alternate namesAmerican River District, Capital Dredging Co., Natomas Co., Folsom-Natoma District
RegionNA
Data scoreB
Coordinates38.61184, -121.22075
References
LOGAN, C.A. 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 27-29.CLARK, W.B., 1970, GOLD DISTRICTS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 193, P. 47-49.CARLSON, D.W., 1955, MINES AND MINERAL RESOURCES OF SACRAMENTO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 51, NO. 2, P. 137, 140-142, 186, PL. 2.CLARK, W.B., 1970, PLATINUM: CALIFORNIA DIVISION OF MINES AND GEOLOGY MINERAL INFORMATION SERVICE, V. 23, NO. 6, P. 115-123.