California · Contra Costa County
Producer

Roberts Sand Company Black Diamond

Contra Costa County, California, United States
Silica
⌖ Show on mapUSGS source ↗
Commodities
PrimarySilica
Commodity typeM
Deposit
Deposit sizeS
Materials
Ore mineralsSand
Economic & production
Development statusProducer
Identification
Deposit ID10029544
MRDS IDM007151
RegionNA
Data scoreC
Coordinates37.9574, -121.8841
References
CALIF. JOUR. VOL. 47, NO. 4, OCT. 1951, PP. 583-4; V. 54, NO. 4, OCT. 1958, P. 554, 555, 580, PL.