Reported to be similar to deposits at Sheep Mountain - ARDF number AN080.
Location: In mountains west of the South Fork of the Matanuska River. Sec. 15, T. 19 N., R. 11 E., of the Seward Meridian. Accurate within 1 mile. Locality 49 from Cobb (1972) and locality 38 of MacKevett and Holloway (1977).
Geology: Disseminated chalcopyrite and magnetite in a small, mafic segregation in a Jurassic age quartz diorite (Jasper, 1965). Copper deposits probably similar to those reported on Sheep Mountain - ARDF number AN080 (Berg and Cobb, 1967).
Workings: Unknown
Age: Jurassic or younger; mineralization hosted by mafic segregations in a Jurassic quartz diorite.

Commodities (Major) - Cu
Development Status: None
Deposit Model: Porphyry Cu ? (Cox and Singer, 1986; model 17 ?)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Copper

Mineral List

ⓘ Chalcopyrite

ⓘ Magnetite

2 valid minerals.

Detailed Mineral List:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄

List of minerals for each chemical element

O	Oxygen
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂

Other Databases

Link to USGS - Alaska:	AN081

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Peninsular-Talkeetna DomainDomain
Peninsular TerraneVolcanic Arc

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p. Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000. Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p. Jasper, M.W., 1965, Geochemical investigations of selected areas in south-central Alaska, 1964: Alaska Division of Mines and Minerals Geochemical Report 4, 31 p. MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

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