Unnamed Occurrence (ARDF - JU055; north of White Glacier), Glacier Bay Mining District, Juneau Mining District, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - JU055; north of White Glacier) | - not defined - |
| Glacier Bay Mining District | - not defined - |
| Juneau Mining District | Mining District |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
58° 49' 31'' North , 135° 55' 30'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200952
Long-form identifier:
mindat:1:2:200952:3
GUID (UUID V4):
97fc51af-29a9-4d58-9633-26c9cc3a4e40
Location: This occurrence is at an elevation of about 3,300 feet, approximately 2 miles east-northeast of Mt. Case and 1.5 miles north of the White Glacier. It is in the NW1/4 section 21, T. 35 S., R. 57 E. of the Copper River Meridian. This occurrence is close to location J006 of Wells and others (1986). The location is accurate within 1/4 mile.
Geology: The general area is underlain by deformed and metamorphosed Silurian or Devonian carbonate, clastic and volcanic clastic rocks that have been intruded by Upper Jurassic and Lower Cretaceous granitic and dioritic rocks (Brew and others, 1992). Brew and others (1978) map the country rocks at this occurrence as Permian, thin-bedded limestone and argillite, basalt and andesite, and cherty limestone and siltstone. The deposit consists of lenses and disseminations of pyrite in andesite. It is marked by iron-stained zones hundreds of feet wide and up to 1000 feet long (Brew and others,1978). MacKevett and others (1971) report that a 6-foot chip sample contained 2% zinc, but Brew and others (1978) failed to find samples with elevated zinc. Still (1989), reports samples that contain anomalous gold, lead and molybdenum.
Workings: Surface sampling only.
Alteration: Conspicuous iron-staining.
Commodities (Major) - Au, Cu, Mo, Pb, Zn
Development Status: None
Deposit Model: Possible metamorphosed Kuroko massive sulfide (Cox and Singer, 1986; model 28a)
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 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
Other Databases
| Link to USGS - Alaska: | JU055 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander DomainDomain
USA
- Alaska
- Juneau Mining DistrictMining District
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References
