Pyrola Prospect, Admiralty Mining District, Hoonah-Angoon Census Area, Alaska, USAi
Regional Level Types | |
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Pyrola Prospect | Prospect |
Admiralty Mining District | Mining District |
Hoonah-Angoon Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
57° 57' 46'' North , 134° 33' 14'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
199528
Long-form identifier:
mindat:1:2:199528:5
GUID (UUID V4):
7159020d-fc0e-444a-9d35-c0f29e17c692
The Pyrola prospect is on active claims within the Wilderness of the Admiralty Island National Monument.
Location: The Pyrola prospect is at an elevation of about 2,600 feet, about 0.2 mile north-northeast of the southwest corner of sec. 15, T. 45 S., R. 67 E. The prospect is MAS no. 0021140184 (U.S. Bureau of Land Management, 2002). The location is accurate with 0.2 mile.
Geology: The Pyrola prospect is a volcanogenic massive-sulfide deposit in Triassic(?) felsic to intermediate volcanic rocks, carbonaceous siltstone, argillite, limestone and dolomite (Van Nieuwenhuyse, 1984; Berg, 1984; Newberry and others, 1997). The deposit consists of a 9-meter-thick stratiform layer of massive sulfides with barite and massive barite, interbedded with black argillite. The sulfides are mainly pyrite, sphalerite, and galena with minor chalcopyrite, jamesonite, and boulangerite. The mineralized layer is overlain by a distinctive pyrite-silica rock (halo?) about 0.5 to 6 feet thick. It is underlain by a weakly foliated sericite-quartz-carbonate unit derived at least in part from altered basalt; it contains 5-30 percent disseminated pyrite and veined pyrite. The deposit is probably similar to the Greens Creek Mine (Barnett and Miller, 2003; ARDF JU253) about 8 miles to the north, and like Greens Creek probably has gold and substantial silver values. The Pyrola prospect was discovered in 1954 and has been drilled. It is on active claims within the Wilderness of the Admiralty Island National Monument.
Workings: The Pyrola prospect was discovered in 1954 and has been drilled.
Age: Probably Triassic,analogous to the Greens Creek Mine (Barnett and Miller, 2003; ARDF JU253).
Alteration: This massive-sulfide deposit is overlain by a distinctive pyrite-silica rock (halo?) about 0.5 to 6 feet thick. It is underlain by a weakly foliated pyrite-sericite-quartz-carbonate unit derived at least in part from altered basalt.
Reserves: None have been published but may be significant.
Commodities (Major) - Ag, As, Au, Cu, Pb, Zn
Development Status: None
Deposit Model: Volcanogenic Ag-(Au?)-Cu- Pb-Zn massive sulfide deposit (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
7 valid minerals.
Detailed Mineral List:
β Baryte Formula: BaSO4 |
β Boulangerite Formula: Pb5Sb4S11 |
β Chalcopyrite Formula: CuFeS2 |
β Galena Formula: PbS |
β Jamesonite Formula: Pb4FeSb6S14 |
β Pyrite Formula: FeS2 |
β Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Sphalerite | 2.CB.05a | ZnS |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Galena | 2.CD.10 | PbS |
β | Pyrite | 2.EB.05a | FeS2 |
β | Jamesonite | 2.HB.15 | Pb4FeSb6S14 |
β | Boulangerite | 2.HC.15 | Pb5Sb4S11 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Baryte | 7.AD.35 | BaSO4 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | β Baryte | BaSO4 |
S | Sulfur | |
S | β Baryte | BaSO4 |
S | β Boulangerite | Pb5Sb4S11 |
S | β Chalcopyrite | CuFeS2 |
S | β Galena | PbS |
S | β Jamesonite | Pb4FeSb6S14 |
S | β Pyrite | FeS2 |
S | β Sphalerite | ZnS |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Jamesonite | Pb4FeSb6S14 |
Fe | β Pyrite | FeS2 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | β Sphalerite | ZnS |
Sb | Antimony | |
Sb | β Boulangerite | Pb5Sb4S11 |
Sb | β Jamesonite | Pb4FeSb6S14 |
Ba | Barium | |
Ba | β Baryte | BaSO4 |
Pb | Lead | |
Pb | β Boulangerite | Pb5Sb4S11 |
Pb | β Galena | PbS |
Pb | β Jamesonite | Pb4FeSb6S14 |
Other Databases
Link to USGS - Alaska: | SI065 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
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