Mine detail: Three Brothers Zone

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Location:	King County, Washington, United States, North America
Lat / long:	47.51792, -121.3456
dep_id:	10048444
mrds_id:	MP00031
mas_id:	530331236
Commodity type:	metallic
Major mineral:	Copper, Molybdenum
Trace mineral:	Silver, Arsenic, Gold, Lead
Operation type:	Unknown
Deposit type:	porphyry Cu
Production size:	Unknown
Development status:	Occurrence
ore:	Chalcopyrite, Galena, Hematite, Magnetite, Molybdenite, Pyrite, Pyrrhotite
gangue:	Chlorite, Quartz, Siderite
orebody_fm:	DISSEMINATED, STOCKWORK
model:	53: Porphyry Cu
alteration:	Potassic, Propylitic, Silicification
Reporter:	Peterson, Jocelyn A., Thurber, Causey, J. Douglas
hrock_unit:	Snoqualmie Batholith, Northern Phase;Snoqualmie Batholith, Northern Phase
hrock_type:	Tonalite
Structure:	Part Of Ne-Trending En-Echelon Belt Of Nw-Striking Faults, Fractures, And Breccia Pipes, Brecciation Of Host Rocks
tectonic:	Cascade Volcanic Arc
References:	Deposit:: HOLLISTER, V.F., 1979, PROPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, V. 11, P. 32. Deposit:: GUALTIERI, J.L., SIMMONS, G.C., THURBER, H.K., AND MILLER, M.S., 1973, MINERAL RESOURCES OF THE ALPINE LAKES STUDY AREA, CHELAN, KING, AND KITTITAS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 1918, P. 71-74. Deposit:: DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 109-110. Deposit:: GUALTIERI, J.L., THURBER, H.K., MILLER, M.S., MCMAHAN, A.B., AND FEDERSPIEL, F.F., 1975, MINERAL RESOURCES OF ADDITIONS TO THE ALPINE LAKES STUDY AREA, CHELAN, KING, AND KITTITAS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 75-3, P. 51-61. Deposit:: U.S. GEOLOGICAL SURVEY BULLETIN 1542-E, 1989, FIG. 11, P. 98; P. 101-102.