Mine detail: Roberts Sand Company Black Diamond

Previously called ''

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Location

Lat / long:

37.9574, -121.8841

Resource(M)

Primary:	Silica
Ore:	Sand

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer

Geology

References

MRDS	M007151
DEP	10029544
Reference	CALIF. JOUR. VOL. 47, NO. 4, OCT. 1951, PP. 583-4; V. 54, NO. 4, OCT. 1958, P. 554, 555, 580, PL.
Reporter	Gere, W.