Mine detail: Duncan

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Location: San Mateo County, California, United States, North America
Lat / long: 37.48074, -122.45133
dep_id: 10077438
mrds_id: W025068
Commodity type: nonmetallic
Major mineral: Sand and Gravel, Construction
Operation type: Unknown
Deposit type: Sedimentary
Production size: Small ammount of material produced
Development status: Past Producer
Reporter: Unknown
References:
  • CALIF. JOUR. MINES & GEO. V. 51, NO.4, OCT, 1955, P.457, PL. 5
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