Mine detail: Griffit* Royal Purple Obsidian Mines.

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Location: Modoc County, California, United States, North America
Lat / long: 41.83542, -120.29549
dep_id: 10031399
mrds_id: M010157
Commodity type: nonmetallic
Major mineral: Gemstone, Stone
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
Reporter: Gere, W., Li, Zhiping (Peters, S.)
References:
  • GEMS & MINERALS, APRIL 1966, P.2
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