Mine detail: Index Bornite Prospect

Previously called 'Index'

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Location

Lat / long:

47.81675, -121.49815

Resource(M)

Primary:	Copper, Silver
Ore:	Bornite, Chalcocite, Chalcopyrite
Gangue:	Calcite, Quartz
Orebody form:	VEINLETS

Production

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

Geology

Host rock:	Index Batholith;
Host type:	Diorite
Structure:	Intense Fracturing
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Potassic (Biotite). Volcanic Rocks Intensely Pyritized And Hornfelsed. Intrusion Is Pyritized.

References

MRDS	M025915
DEP	10095361
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. 86.}{Deposit:: GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 47.}{Deposit:: BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 17.}
Reporter	Andrews, David H. (Lawson, William A.), Peterson, Jocelyn A.