Mine detail: Gold Mountain

Previously called 'Darrington'

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Location: Snohomish County, Washington, United States, North America
Lat / long: 48.22509, -121.559
dep_id: 10009065
mrds_id: D001710
Commodity type: metallic
Major mineral: Copper
Minor mineral: Gold, Silver
Trace mineral: Antimony, Lead, Zinc
Operation type: Unknown
Production size: Unknown
Development status: Occurrence
ore: Chalcopyrite, Galena, Pyrrhotite, Sphalerite, Tetrahedrite
gangue: Biotite, Chlorite, Magnetite, Plagioclase, Quartz, Sericite
orebody_fm: STOCKWORK VEINLETS
model: 53: Porphyry Cu
alteration: Potassic, Argillic, Propylitic
Reporter: Miller, M. H., Peterson, Jocelyn A.
hrock_unit: Easton Metamorphic Suite, Darrington Phyllite
hrock_type: Schist
tectonic: Cascade Volcanic Arc
References:
  • Deposit:: PURDY, C.P., JR., 1951, ANTIMONY OCCURRENCES OF WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 39, P. 169.
  • Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, P. 84.
  • Deposit:: BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY REPORT OF INVESTIGATIONS 6, P. 8.
  • Deposit:: HOLLISTER, V.F., 1979, PROPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, P. 34.
  • Deposit:: TABOR, R.W., BOOTH, D.B., VANCE, J.A., FORD, A.B., AND ORT, M.H., 1988, PRELIMINARY GEOLOGIC MAP OF THE SAUK RIVER 30 BY 60 MINUTE QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 88-692, SCALE 1:100,000.
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