Mine detail: Twin Sisters Mtns

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Location: Skagit County, Washington, United States, North America
Lat / long: 48.63981, -121.89957
dep_id: 10047974
mrds_id: M700347
Commodity type: metallic
Major mineral: Chromium
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Chromite
gangue: Dunite, Olivine
orebody_fm: PODS, BANDS, MASSIVE, DISSEMINATED
model: 15: Podiform chromite (minor)
Reporter: Lawson, William A. (Evarts, Russell C.), Peterson, Jocelyn A.
hrock_type: Dunite
tectonic: Active Margin (Leading Edge Of North American Plate)
References:
  • Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS, PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 40.
  • Deposit:: WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 24, P. 16
  • Deposit:: WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 27, P. 18.
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