Unnamed Occurrence (ARDF - TL062; near Mt. Distin), Yentna Mining District, Matanuska-Susitna Borough, Alaska, USAi
Regional Level Types | |
---|---|
Unnamed Occurrence (ARDF - TL062; near Mt. Distin) | - not defined - |
Yentna Mining District | Mining District |
Matanuska-Susitna Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
62° 5' 27'' North , 152° 34' 40'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201830
Long-form identifier:
mindat:1:2:201830:3
GUID (UUID V4):
fb4e99de-5311-444a-811d-235cb67ff984
Location: Alaska Department of Natural Resources unpublished claim records show this locality, about one mile N10E of Distin Peak in the southeast quarter of Section 9, T. 23 N., R. 18 W., of the Seward Meridian.
Geology: A small plug of Late Cretaceous (67 m.y.) diorite, assigned to the Kichatna plutons (TKk), intrudes Mesozoic flysch (KJs) in this area (Reed and Nelson, 1980). Cominco American Incorporated (unpublished report) describes vuggy veins, veinlets, and breccia of quartz-pyrrhotite- pyrite-chalcopyrite-and/or arsenopyrite that cut both the sedimentary and intrusive rocks. A similar occurrence is noted in Old Man Creek (TY026) in the Tyonek quadrangle.
Workings: Prospecting, silt and rock chip geochemistry and mapping at 1:12,000 scale by Cominco American Incorporated in the late 1980s.
Age: Late Cretaceous; mineralization is interpreted to be linked to the Late Cretaceous diorite that is mapped as one of the 67 m.y. old Kichatna plutons by Reed and Nelson (1980).
Alteration: Quartz alteration.
Commodities (Major) - Au, Cu; (Minor) - As
Development Status: None
Deposit Model: Polymetallic veins (Cox and Singer, 1986; model 22c).
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
5 valid minerals.
Detailed Mineral List:
ⓘ Arsenopyrite Formula: FeAsS |
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Pyrite Formula: FeS2 |
ⓘ Pyrrhotite Formula: Fe1-xS |
ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | ⓘ Quartz | SiO2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Arsenopyrite | FeAsS |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Pyrite | FeS2 |
S | ⓘ Pyrrhotite | Fe1-xS |
Fe | Iron | |
Fe | ⓘ Arsenopyrite | FeAsS |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
As | Arsenic | |
As | ⓘ Arsenopyrite | FeAsS |
Other Databases
Link to USGS - Alaska: | TL062 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Farewell buried DomainDomain
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