Unnamed Occurrence (ARDF - CH087; near head of Thru Creek), Chandalar Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - CH087; near head of Thru Creek) | - not defined - |
| Chandalar Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 54' 0'' North , 148° 35' 23'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200493
Long-form identifier:
mindat:1:2:200493:1
GUID (UUID V4):
73d9a90c-4bec-4f58-8ec5-f88c21b8f491
Location: This occurrence is at an elevation of about 4,400 feet, approximately 4 1/4 miles due north of Reds Lake (SE1/4 sec. 35, T. 36 N., R. 5 W., of the Fairbanks Meridian). This site corresponds to the southernmost of three unnamed prospects shown as loc. 85 in DeYoung (1978) and is included with loc. 50 in Schmidt (1997). The location is accurate within a 1/2-mile radius.
Geology: Schmidt (1997, loc. 50) includes this occurrence with three, presumably similar, occurrences. They are described as quartz veinlets containing malachite-azurite plus or minus pyrite, chalcopyrite, and pyrrhotite in the Silurian and Devonian Skajit(?) Limestone and overlying siltstone and limestone (Beaucoup Formation?). The geologic map indicates that this occurrence is near a thrust contact between Devonian(?) purple, green, and red chloritic slate and phyllite and the Devonian(?) Skajit Limestone (Brosg
Commodities (Major) - Cu
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
3 valid minerals.
Detailed Mineral List:
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| 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 | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | CH087 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
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References
