Unnamed Occurrence (ARDF - WI063; upper Crevice Creek), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types | |
---|---|
Unnamed Occurrence (ARDF - WI063; upper Crevice Creek) | - not defined - |
Koyukuk Mining District | Mining District |
Yukon-Koyukuk Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
67° 21' 18'' North , 151° 49' 29'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201931
Long-form identifier:
mindat:1:2:201931:7
GUID (UUID V4):
fe93a8e7-b89f-424a-b355-75795e6e9b1c
Location: This occurrence is along the north fork of upper Crevice Creek about 5.5 miles east of the junction of Crevice Creek and John River. The occurrence is on the north side of the creek at an elevation of about 1,700 feet, about 0.6 mile northeast of the center of section 9, T. 29 N., R. 19 W., of the Fairbanks Meridian. The occurrence is the site of sample 257 of Dillon and others (1981 [AOF 133B]). The location is accurate.
Geology: This occurrence consists of malachite-stained, calcareous, muscovite-quartz schist that contains fine-grained, disseminated chalcopyrite (Dillon and others, 1981 [AOF133B]). A sample of schist contains 2,000 ppm copper, 500 ppm arsenic, 300 ppm cobalt, 200 ppm lead, 1,000 ppm vanadium, and 500 ppm zircon. The rocks in the area are Middle or Upper Devonian(?) chloritic and carbonate units (Dillon and others, 1986).
Workings: Only surface sampling.
Commodities (Major) - As, Cu; (Minor) - Co, Pb, V, Zr
Development Status: None
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
2 valid minerals.
Detailed Mineral List:
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Malachite | Cu2(CO3)(OH)2 |
C | Carbon | |
C | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | ⓘ Malachite | Cu2(CO3)(OH)2 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
Link to USGS - Alaska: | WI063 |
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Other Regions, Features and Areas containing this locality
North America
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainDomain
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