Unnamed Occurrence (ARDF - AN140; near Dartmouth Glacier), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
61° 10' 12'' North , 147° 39' 36'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200521
Long-form identifier:
mindat:1:2:200521:1
GUID (UUID V4):
0bf3fa01-fe78-45f8-8072-00fd89f3919f
Location: On slope 1 mile north-northeast from terminus of Dartmouth Glacier. Accurate within 3,000 ft. Locality A-16 of Jansons and others (1984).
Geology: Jansons and others (1984) reported several sub-parallel quartz veins in shear zones in and along margin of a small granitic stock. The veins are 2 to 12 inches wide and contain disseminated grains and massive pods of arsenopyrite and lesser disseminated galena and pyrite. The granitic stock intrudes metasedimentary rocks of the Late Cretaceous Valdez Group. Three chip samples averaged 0.15 oz/ton Au and 0.37 oz/ton Ag. Three grab samples contained traces of gold and up to 0.03 oz/ton Ag (Jansons and others, 1984).
Workings: Three chip samples averaged 0.15 oz/ton Au and 0.37 oz/ton Ag. Three grab samples contained traces of gold and up to 0.03 oz/ton Ag. This location has moderate mineral development potential (Jansons and others, 1984).
Age: Late Cretaceous or younger; shear zones and veins cut a small granitic stock which intrudes metasedimentary rocks of the Late Cretaceous Valdez Group.
Commodities (Major) - Ag, As, Au
Development Status: None
Deposit Model: Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; model 36a.1 ?) or Epithe
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 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | 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 | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | AN140 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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.
References
