Lafayette Glacier Occurrence, Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Lafayette Glacier Occurrence | Occurrence |
| Prince William Sound Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 3' North , 147° 51' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Occurrence in a glacial stream that flows westward from the terminus of Lafeyette Glacier. Accurate within 1 mile. Locality A-17 and P-37 of Jansons and others (1984) and locality P-34 of Hoekzema and Fechner (1986).
Geology: Jansons and others (1984) reported disseminated, very fine-grained gold in poorly washed fluvial glacial gravels. A large volume of gravel occurs in the stream flowing from Lafayette Glacier and large boulders are present. The bedrock in the area is metasedimentary rocks of the Late Cretaceous Valdez Group. Quartz vein material and metasedimentary float rock contain pyrite, a trace of gold, and up to 0.12 oz/ton Ag (Jansons and others, 1984).
Workings: There have been no placer workings or production to date and potential for mineral development is low (Jansons and others, 1984). An alluvium sample contained 0.001 oz/cubic yard Au. Two float samples contained a trace of gold and 0.03 and 0.12 oz/ton Ag.
Age: Quaternary
Production: No recorded production.
Commodities (Major) - Ag, Au
Development Status: None
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a)
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
3 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| 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 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | AN135 |
|---|
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