Mine detail: Gold Mountain

Previously called 'Darrington'

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Location

Lat / long: 48.22509, -121.559

Resource(M)

Primary: Copper
Secondary: Gold, Silver
Tertiary: Antimony, Lead, Zinc
Ore: Chalcopyrite, Galena, Pyrrhotite, Sphalerite, Tetrahedrite
Gangue: Biotite, Chlorite, Magnetite, Plagioclase, Quartz, Sericite
Orebody form: STOCKWORK VEINLETS

Production

Operation type: Unknown
Production size: Unknown
Development status: Occurrence

Geology

Host rock:Easton Metamorphic Suite, Darrington Phyllite
Host type:Schist
Tectonic:Cascade Volcanic Arc
Alteration processes:Potassic, Argillic, Propylitic

References

MRDSD001710
DEP10009065
Reference{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.}
ReporterMiller, M. H., Peterson, Jocelyn A.