Unnamed Occurrence (ARDF - SI117; upper Flat Top Mountain), Chichagof Mining District (Chicagof Mining District), Sitka, Alaska, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
57° 36' 58'' North , 135° 59' 9'' West
Latitude & Longitude (decimal):
Köppen climate type:
The occurrence is in West Chichagof-Yakobi Wilderness.
Location: The location of this occurrence is only known approximately to be at an elevation of about 1,500 feet on Flat Top Mountain. For this record, the site is plotted 0.4 mile southwest of the center of sec. 17, T. 49 S., R. 59 E. It is location P-85 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. They include the the southeastern extensions of the faults at the Hirst (SI087) and Chichagof (SI093) mines, which control the mineralization there. Bittenbender and others (1999), citing Still and Weir (1981), report that the occurrence is a quartz vein in graywacke. A sample of quartz float contained 2 parts per million (ppm) silver and 200 ppm arsenic.
Workings: Only surface sampling.
Commodities (Major) - Ag; (Minor) - As
Development Status: None
Deposit Model: Low-sulfide quartz vein.
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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
Other Databases
| Link to USGS - Alaska: | SI117 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainAccretionary Complex
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
