Mine detail: Mount Vernon

Previously called 'Devils MountainPacific'

<< Back to the map

Location

Lat / long:

48.3687, -122.29291

Resource(M)

Primary:	Nickel, Gold
Tertiary:	Chromium
Ore:	Bravoite, Chromite, Marcasite, Pyrite
Gangue:	Ankerite, Calcite, Chalcedony, Chlorite, Dolomite, Opal, Quartz, Serpentine
Orebody form:	TABULAR
Discovery year:	1915

Production

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

Geology

Host rock:	Haystack Terrane;Haystack Terrane
Host type:	Greenstone
Structure:	Devils Mountain Fault Zone Near Crest Of Devils Mountain Anticline, Shear Zone; Ore Body Lies On South Limb Of Large Anticlinal Fold
Tectonic:	Active Margin (Leading Edge Of North American Plate)
Alteration processes:	Oxidation Of Sulfides Producing Much Limonite

References

MRDS	M700267
DEP	10047917
Reference	{Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 278.}{Deposit:: HUNTTING, M.T., 1955, GOLD IN WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 42, P. 87.}{Deposit:: HOBBS, S.W., AND PECORA, W.T., 1941, NICKEL-GOLD DEPOSIT NEAR MOUNT VERNON, SKAGIT COUNTY, WASHINGTON: U.S. GEOLOGICAL SURVEY BULLETIN 931-D, P. 57-78.}{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. 332.}{Reserve-Resource:: HOBBS AND PECORA, 1941}
Reporter	Coury, Anny B., Lawson, William A. (Evarts, Russel C.), Peterson, Jocelyn A.