Unnamed Occurrences (ARDF - KC138), Driest Point, Annette Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 10' 15'' North , 131° 35' 31'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Metlakatla | 1,405 (2017) | 4.8km |
Saxman | 417 (2017) | 16.4km |
Ketchikan | 8,197 (2017) | 19.3km |
Mindat Locality ID:
201991
Long-form identifier:
mindat:1:2:201991:1
GUID (UUID V4):
57d4443a-c225-42b8-b560-2f624bf9cf6c
Location: This site represents 5 occurrences along about a half-mile of the south shoreline of the west-trending peninsula that separates Sylburn Harbor from Port Chester. The occurrences are in sections 9 and 29, T. 77 S., R. 92 E., of the Copper River Meridian, between 0.5 and 0.9 mile from Driest Point. The map coordinates are for their approximate midpoint. The site corresponds to loc. 16 in Berg (1972 [I 684]), loc. 135 in Elliott and others (1978), and loc. 23a-e in Karl (1992). The location is accurate within about 0.1 mile.
Geology: The country rocks in the area of this site are recrystallized, Upper Triassic carbonate and clastic rocks, rhyolite, and basalt (Berg, 1972). The rocks are folded and faulted, and intruded by rhyolite dikes. All were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. The mineral occurrences consist of quartz-calcite-barite(-hematite) veins up to 6 feet thick that contain galena and sphalerite, and extend at least 60 feet inland from tidewater (Karl, 1992, loc. 23). The veins are hosted by dolomitic conglomerate and brecciated rhyolite. Rhyolite dikes up to 60 feet thick cut the conglomerate and also intrude the veins. Samples of variously mineralized veins and bedded rocks contained up to 20 ppm Ag, more than 2% Pb, 1500 ppm Zn; and more than 5000 ppm Ba (Karl, 1992, loc. 23a-e).
Workings: Samples of variously mineralized veins and bedded rocks contained up to 20 ppm Ag, more than 2% Pb, 1500 ppm Zn; and more than 5000 ppm Ba (Karl, 1992, loc. 23a-e).
Age: Veins hosted by Upper Triassic strata and cut by a rhyolite dike may be Late Triassic in age; veins that postdate the dike may be Late Cretaceous or younger.
Commodities (Major) - Ag, barite, Pb, Zn
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
7 valid minerals.
Detailed Mineral List:
ⓘ Baryte Formula: BaSO4 |
ⓘ Calcite Formula: CaCO3 |
ⓘ Galena Formula: PbS |
ⓘ Hematite Formula: Fe2O3 |
ⓘ Pyrite Formula: FeS2 |
ⓘ Quartz Formula: SiO2 |
ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Sphalerite | 2.CB.05a | ZnS |
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
ⓘ | Baryte | 7.AD.35 | BaSO4 |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | ⓘ Calcite | CaCO3 |
O | Oxygen | |
O | ⓘ Baryte | BaSO4 |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Hematite | Fe2O3 |
O | ⓘ Quartz | SiO2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Baryte | BaSO4 |
S | ⓘ Galena | PbS |
S | ⓘ Pyrite | FeS2 |
S | ⓘ Sphalerite | ZnS |
Ca | Calcium | |
Ca | ⓘ Calcite | CaCO3 |
Fe | Iron | |
Fe | ⓘ Hematite | Fe2O3 |
Fe | ⓘ Pyrite | FeS2 |
Zn | Zinc | |
Zn | ⓘ Sphalerite | ZnS |
Ba | Barium | |
Ba | ⓘ Baryte | BaSO4 |
Pb | Lead | |
Pb | ⓘ Galena | PbS |
Other Databases
Link to USGS - Alaska: | KC138 |
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