Twin Lakes East Occurrence, Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi
Regional Level Types | |
---|---|
Twin Lakes East Occurrence | Occurrence |
Bristol Bay Mining District | Mining District |
Lake and Peninsula Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
60° 43' 11'' North , 153° 42' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
200460
Long-form identifier:
mindat:1:2:200460:3
GUID (UUID V4):
cb261f0c-b856-4fb8-8857-ed03394c410b
Site is in Lake Clark National Park and Preserve.
Location: Locality is on Peak 6,515 approximately 4.8 km NE of the eastern end of Twin Lakes. This is locality 12 of Nelson and others (1985) and locality 20 of MacKevett and Holloway (1977). Sec. 8, T. 7 N., R. 25 W., of the Seward Meridian. Locality is accurate to within 1.6 km.
Geology: Disseminated chalcopyrite, bornite, and associated pyrrhotite occur in mafic to intermediate metavolcanic rocks interbedded with marble (Nelson and others, 1985; 1983, unit Tvf). Nelson and others (1983) report small intrusive bodies that range in composition from granite to gabbro also occur in vicinity. Potassium-argon ages range from 56.2 to 62.7 m.y. (Eakins and others, 1978).
Workings: Unknown
Age: The metavolcanic rocks that host the mineralization have potassium-argon ages, by D.L. Turner, that range from 56.2 to 62.7 m.y. (Eakins and others, 1983).
Alteration: Unknown
Production: No production
Reserves: No reserves
Commodities (Major) - Cu
Development Status: None
Deposit Model: Kuroko massive sulfide ? or Porphyry Cu, skarn related ? (Cox and Singer, 1986;
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
3 valid minerals.
Detailed Mineral List:
ⓘ Bornite Formula: Cu5FeS4 |
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
S | Sulfur | |
---|---|---|
S | ⓘ Bornite | Cu5FeS4 |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Pyrrhotite | Fe1-xS |
Fe | Iron | |
Fe | ⓘ Bornite | Cu5FeS4 |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | ⓘ Bornite | Cu5FeS4 |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
Link to USGS - Alaska: | LC013 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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