Mine detail: Madeira Claim

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Location: Sonoma County, California, United States, North America
Lat / long: 38.59321, -123.01136
dep_id: 10095692
mrds_id: M100313
Commodity type: metallic
Major mineral: Chromium
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Chromite
orebody_fm: LENSE
Reporter: Oster, Karel L. (Albers, John P.)
hrock_type: Serpentinite
yr_lst_prd: 1916
References:
  • Deposit:: LOGAN, C.A., 1918, CHROMIUM, IN BRADLEY, W.W., AND OTHERS, MANGANESE AND CHROMIUM IN CALIFORNIA: CALIF. STATE MINING BUREAU BULLETIN NO. 76, P. 201.
  • Deposit:: DOW, D.H. AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIF.: CALIF. DIVISION OF MINES BULLETIN 134 PART 2, CHAPT. 1, P 27, 36.
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