Mine detail: Cooperative Mine Upper Workings

Previously called 'Howard'

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Location: Snohomish County, Washington, United States, North America
Lat / long: 47.8526, -121.41065
dep_id: 10036710
mrds_id: M025615
Commodity type: metallic
Major mineral: Gold, Silver, Copper
Trace mineral: Lead, Zinc
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Bornite, Chalcopyrite, Pyrite
orebody_fm: VEIN
work_type: Surface/Underground
model: 85: Polymetallic veins
ore_ctrl: Fracturing
Reporter: Peterson, Jocelyn A., Andrews, David H. (Lawson, William A.)
hrock_unit: Grotto Batholith;
hrock_type: Diorite
tectonic: Cascade Volcanic Arc
disc_yr: 1897
discr: Charles R. Howard
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. 81.
  • Deposit:: WEAVER, C.E., 1912, GEOLOGY AND ORE DEPOSITS OF THE INDEX MINING DISTRICT, WASHINGTON: WASHINGTON GEOLOGICAL SURVEY BULLETIN 7, P. 79-80.
  • Deposit:: TABOR, R.W., FRIZZELL, V.A., JR., BOOTH, D.B., WHETTEN, J.T., WAITT, R.B., JR., AND ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, SCALE 1:100,000.
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