Mine detail: Mount Si

Previously called 'Bald Hornet Claims'

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Location

Lat / long:

47.51342, -121.70621

Resource(M)

Primary:	Copper
Ore:	Chalcopyrite, Pyrite
Gangue:	Quartz, Sericite, Tourmaline
Orebody form:	BRECCIA

Production

Operation type:	Unknown
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Western Melange Belt
Host type:	Hornfels
Associated rock:	Snoqualmie Batholith
Associated type:	Diorite
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Plutonic Rocks Intensely Sericitized (Phyllic)

References

MRDS	MP00088
DEP	10048499
Reference	{Deposit:: ASHLEY, R.P., 1991, FIELD EXAM WITH GRANT NEWPORT OF WEYERHAUSER}{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.}
Reporter	Peterson, Jocelyn A.