Unnamed Occurrence (ARDF - SI116; near Flat Top Mountain), Chichagof Mining District (Chicagof Mining District), Sitka, Alaska, USAi
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Latitude & Longitude (WGS84):
57° 37' 31'' North , 135° 59' 52'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201582
Long-form identifier:
mindat:1:2:201582:1
GUID (UUID V4):
f372a1f4-3c4f-4e31-88c3-6a1994732d1a
The occurrence is in West Chichagof-Yakobi Wilderness.
Location: The location of this occurrence is only known to be approximately near sea level on the southwest shore of Sister Lake at the north foot of Flat Top Mountain. For this record, the site is plotted 0.1 mile east of the west edge of the C-6 quadrangle, in sec. 18, T. 49 S., R. 59 E. It is location P-84 of Bittenbender and others (1999).
Geology: Johnson and Karl (1985) map the rocks in the area of this occurrence as the Freeburn assemblage, a collage of kilometer-scale, fault-bounded, lozenge-shaped blocks of Cretaceous and Cretaceous(?) metasedimentary and metavolcanic rocks. The rocks are cut by numerous steeply-dipping, northwest-striking faults. The southeastern extensions of the faults at the Hirst (SI087) and Chichagof (SI093) mines, which control the mineralization there, are about a mile southwest of this occurrence. Bittenbender and others (1999), citing Still and Weir (1981), report that the prospect is a quartz vein in graywacke. A sample of quartz float contained 2 parts per million gold.
Workings: A sample of quartz float contained 2 parts per million gold.
Commodities (Major) - Au
Development Status: None
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: | SI116 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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References
