Mine detail: Hirst-Chichagof Mine

Previously called 'HirstBahrt'

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Location

Lat / long:

57.68582, -136.11037

Resource(M)

Primary:	Gold, Silver
Secondary:	Lead
Tertiary:	Zinc, Copper, Arsenic
Ore:	Chalcopyrite, Galena, Gold, Sphalerite
Gangue:	Calcite, Quartz
Orebody form:	TABULAR
Discovery year:	1905

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1922
Last production ended:	1943

Geology

Host rock:	Sitka Graywacke;Sitka Graywacke
Host type:	Siltstone
Associated type:	Mafic Intrusive Rock
Structure:	Hirst Fault Localizes Ore Shoots
Alteration processes:	Porphyry Dike Alogn Footwall Is Altered

References

MRDS	A010687
DEP	10100942
Reference	{Deposit:: USGS OFR 78-450, P. 58-61}{Deposit:: USGS B 929, P. 78-81, 101-118}{Production:: USGS B929}
Reporter	Elliott, R. L., Mosier, Dan