Unnamed Prospect (ARDF - SI029; southeast end of Cub Mountain), Chichagof Mining District (Chicagof Mining District), Hoonah-Angoon Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
57° 52' 57'' North , 136° 16' 33'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202388
Long-form identifier:
mindat:1:2:202388:8
GUID (UUID V4):
f56309d6-98c9-41f8-81a8-29d597809dc4
The prospect is in West Chichagof-Yakobi Wilderness.
Location: This prospect is at an elevation of about 1,700 feet at the southeast end of Cub Mountain on northwest Chichagof Island. The prospect is about 0.1 mile west of peak 1780, in the NW1/4 sec. 13, T. 46 S., R. 56 E. It is location P-35 of Bittenbender and others (1999), location 10 of Cobb (1972, 1978), and MAS no. 0021140028 (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 Mesozoic or Paleozoic siliceous metasedimentary and metavolcanic rocks that are intruded by Cretaceous or Tertiary quartz diorite and tonalite. The prospect is at or near the contact between the metamorphic and intrusive rocks. The rocks are cut by numerous high-angle faults of diverse, but generally northwest, strike. The Border Ranges Fault, a regional-scale, northwest-striking, steeply-dipping fault is about a mile southwest of the prospect. Cobb (1972, 1978), citing Rossman (1959), describes the deposit as an auriferous quartz vein about a foot thick in diorite. The vein is traceable for about 50 feet and contains visible gold. Assays indicate that the vein contains about an ounce of gold per ton. Isotopic studies indicate that the gold-quartz veins in coastal southern and southeastern Alaska are Eocene, about 50 Ma in age (Haeussler, 1995; Goldfarb, 1997; Goldfarb and others, 1997).
Workings: Only surface sampling.
Age: Isotopic studies indicate that the gold-quartz veins in coastal southern and southeastern Alaska are Eocene, about 50 Ma in age (Haeussler and others, 1995; Goldfarb, 1997; Goldfarb and others, 1997).
Commodities (Major) - Au
Development Status: Undetermined.
Deposit Model: Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).
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.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Gold | 1.AA.05 | Au |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | ⓘ Quartz | SiO2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
Au | Gold | |
Au | ⓘ Gold | Au |
Other Databases
Link to USGS - Alaska: | SI029 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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