Unnamed Prospect (ARDF - SI034; east of Lake Elfendahl), Chichagof Mining District (Chicagof Mining District), Hoonah-Angoon Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
57° 50' 36'' North , 136° 15' 32'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Mindat Locality ID:
202390
Long-form identifier:
mindat:1:2:202390:1
GUID (UUID V4):
f5711ba4-fcd1-4fbe-92a3-b34f9d3bb830
The prospect is in West Chichagof-Yakobi Wilderness.
Location: This prospect is at an elevation of about 1,500 feet, about 1.2 miles east of Lake Elfendahl and 0.6 mile north-northeast of the 2,605-foot peak of Mount Fritz. The prospect is just east of an unnamed lake in the NE1/4 sec. 36, T. 46 S., R. 56 E. It is location P-43 of Bittenbender and others (1999), location 14 of Cobb (1972, 1978), and MAS no. 0021140054 (U.S. Bureau of Land Management, 2002). The location is accurate within about 0.5 mile.
Geology: Johnson and Karl (1985) map the rocks in the area of this prospect as Triassic greenstone intruded by Tertiary(?) granodiorite. The rocks are cut by high-angle faults that mainly strike northwest; the most prominent is the regional-scale Border Ranges Fault whose trace is about a mile southwest of the prospect. Cobb (1972, 1978), citing Rossman (1959), describes the prospect as a small quartz vein that contains pyrite, chalcopyrite, sphalerite, and galena. The vein is in a fault near the contact between greenstone and diorite. There are no assay data but Rossman speculated that the vein also contains gold.
Commodities (Major) - Cu, Pb, Zn; (Minor) - Au?
Development Status: Undetermined.
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
5 valid minerals.
Detailed Mineral List:
| β Chalcopyrite Formula: CuFeS2 |
| β Galena Formula: PbS |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 |
| 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 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| S | β Galena | PbS |
| S | β Pyrite | FeS2 |
| S | β Sphalerite | ZnS |
| Fe | Iron | |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrite | FeS2 |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | β Sphalerite | ZnS |
| Pb | Lead | |
| Pb | β Galena | PbS |
Other Databases
| Link to USGS - Alaska: | SI034 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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References
