Mine detail: Keystone

Previously called ''

<< Back to the map

Location

Lat / long:

46.83482, -121.28868

Resource(M)

Primary:	Gold, Silver, Copper
Tertiary:	Tungsten, Lead
Ore:	Chalcopyrite, Galena, Scheelite, Wolframite
Orebody form:	VEIN
Discovery year:	1913

Production

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

Geology

Host rock:	Bumping Lake Pluton
Host type:	Rhyodacite
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Granodiorite Locally Highly Fe-Oxide Stained

References

MRDS	MP00250
DEP	10048645
Reference	{Deposit:: SIMMONS, G.C., VAN NOY, R.M., AND ZILKA, N.T., 1983, MINERAL RESOURCES OF THE COUGAR LAKES-MOUNT AIX STUDY AREA, YAKIMA AND LEWIS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY BULLETIN 1504, P. 58-59.}{Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 106.}
Reporter	Peterson, Jocelyn A.