Pierson Prospect, Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
Regional Level Types | |
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Pierson Prospect | Prospect |
Chistochina Mining District | Mining District |
Valdez-Cordova Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
61° 36' 20'' North , 143° 40' 22'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
199388
Long-form identifier:
mindat:1:2:199388:5
GUID (UUID V4):
8eef3f55-6aef-4b03-8fb4-52ef28cf8634
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This prospect is southeast of the terminus of Kuskulana Glacier. It is at an elevation of about 4,200 feet, 2,800 feet northwest of elevation 5805, and 1,200 feet southwest of the center of section 18, T. 3 S., R. 10 E. of the Copper River Meridian. This is locality 126 of MacKevett (1976) and locality 26 of MacKevett and others (1978). The location is accurate to within about 100 feet.
Geology: The deposit at this prospect consists of a 2- to 3-foot-thick, malachite-stained shear zone that contains pyrite, chalcopyrite, and free gold (Moffit and Mertie, 1923; MacKevett, 1976). The shear zone is between Triassic Nikolai Greenstone and a 30-foot-thick, Tertiary(?), brecciated latite dike that intrudes along the contact of the Nikolai Greenstone and the Triassic Chitistone Limestone. A sample of the sheared rock contained 0.1 part per million (ppm) gold, 1.5 ppm silver, 1,000 ppm arsenic, 200 ppm copper, and 700 ppm zinc. The deposit was explored by a short adit and opencut.
Workings: The deposit was explored by a short adit and opencut.
Age: Tertiary(?); the felsic dike associated with the deposit is probably Tertiary.
Alteration: Oxidation.
Commodities (Major) - Ag, Au; (Minor) - As, Cu, Zn
Development Status: None
Deposit Model: Polymetallic vein (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
4 valid minerals.
Detailed Mineral List:
β Chalcopyrite Formula: CuFeS2 |
β Gold Formula: Au |
β Malachite Formula: Cu2(CO3)(OH)2 |
β Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Gold | 1.AA.05 | Au |
Group 2 - Sulphides and Sulfosalts | |||
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Pyrite | 2.EB.05a | FeS2 |
Group 5 - Nitrates and Carbonates | |||
β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Malachite | Cu2(CO3)(OH)2 |
C | Carbon | |
C | β Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | β Malachite | Cu2(CO3)(OH)2 |
S | Sulfur | |
S | β Chalcopyrite | CuFeS2 |
S | β Pyrite | FeS2 |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Pyrite | FeS2 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Cu | β Malachite | Cu2(CO3)(OH)2 |
Au | Gold | |
Au | β Gold | Au |
Other Databases
Link to USGS - Alaska: | MC048 |
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Other Regions, Features and Areas containing this locality
North America
- Wrangell MountainsMountain Range
North America PlateTectonic Plate
- Wrangellia DomainDomain
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