Mine detail: Duke Island Ultramafic Complex

Previously called 'Ditto ? Prospect'

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Location

Lat / long:

54.92557, -131.3598

Resource(M)

Primary:	Iron
Secondary:	Chromium
Tertiary:	Platinum, Nickel, Copper
Ore:	Chromite
Gangue:	Pyrite, Pyrrhotite
Other material:	Chalcopyrite, Pentlandite

Production

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

Geology

Host rock:	Duke Island Ultramafic Complex;Duke Island Ultramafic Complex;Duke Island Ultramafic Complex
Host type:	Hornblendite
Associated rock:	Duke Island Ultramafic Complex;Duke Island Ultramafic Complex
Associated type:	Hornblendite

References

MRDS	A012405
DEP	10001637
Reference	{Deposit:: USGS OFR 78-73B, LOC. 166}{Deposit:: IRVINE, T.N., 1959, THE ULTRAMAFIC COMPLEX AND RELATED ROCKS OF DUKE ISLAND, SOUTHEASTERN ALASKA: CALIFORNIA INSTITUTE OF TECHNOLOGY, PASADENA, PH.D. THESIS}{Deposit:: TAYLOR, H.P. AND NOBLE, J.A., 1960, ORIGIN OF THE ULTRAMAFIC COMPLEXES IN SOUTHEASTERN ALASKA: INTERNAT. GEOL. CONG., 21ST, COPENHAGEN, REPT., PT. 13, P. 178-180}{Deposit:: USGS OFR 78-73M, P. 24-25, 27}{Deposit:: USGS PP 800-C, P. C159}{Deposit:: USGS BULL 1246, P. 183}{Other Database:: BAG-OFR-78-73B-166}
Reporter	Leonard, Kenneth R. (Elliott, R. L.), Mosier, Dan