Mine detail: Elkhorn Group

Previously called 'Karnes Group'

<< Back to the map

Location

Lat / long:

47.73924, -123.01181

Resource(M)

Primary:	Manganese
Tertiary:	Iron
Ore:	Bementite, Hematite
Gangue:	Jasper
Orebody form:	LENSES, PODS, PINCH AND SWELL

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1945

Geology

Host rock:	Crescent Formation;Crescent Formation
Host type:	Limestone
Structure:	Basalt Is Highly Fractured And Cut By Many Minor Faults
Tectonic:	Active Margin (Leading Edge Of North American Plate)
Alteration processes:	Basalt Is Spilitized

References

MRDS	M700320
DEP	10047953
Reference	{Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, P. 259.}{Deposit:: MAGILL, E.A., 1960, MANGANESE DEPOSITS OF THE OLYMPIC PENINSULA, WASH.: U.S. BUREAU OF MINES REPORT OF INVESTIGATINS 5530, P. 55-57, 76.}{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. 104.}{Production:: DERKEY AND OTHERS, 1990}
Reporter	Peterson, Jocelyn A., Lawson, William A. (Evarts, Russell C.)