Unnamed Prospect (ARDF - AN106; on Raggedtop Mountain), Anchorage Mining District, Anchorage, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - AN106; on Raggedtop Mountain) | - not defined - |
| Anchorage Mining District | Mining District |
| Anchorage | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 1' 12'' North , 149° 7' 48'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Girdwood | 2,250 (2017) | 8.8km |
| Whittier | 214 (2018) | 36.3km |
| Eagle River | 24,793 (2013) | 40.9km |
| Knik River | 744 (2011) | 50.3km |
| Knik-Fairview | 14,923 (2011) | 60.2km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Chugach Gem & Mineral Society | Anchorage, Alaska | 47km |
Location: On northeastern flank of Raggedtop Mountain, 2,400 ft east-northeast of summit (peak 5,215). Accurate within 2,000 ft. This is the prospect location from plate 33 of Park (1933).
Geology: According to Park (1933) a quartz vein, apparently shattered from postmineral movement, cuts Late Cretaceous metasedimentary rocks of the Valdez Group. The metasedimentary rocks are in close proximity to quartz diorite or dacite dikes, sills, irregular pipes, or plugs. The vein strikes N 50 W, dips 40 W, and ranges from 1-24 inches thick with about 7 inches being the average thickness. The vein contains galena, pyrite, and limonite. Numerous small mineralized stringers were seen on the steep mountain side south of this location. Samples taken indicate 0.01 oz/ton Au, 1.4 oz/ton Ag, and 1.12 percent Pb (Park, 1933). Other nearby small prospects have several small but well-mineralized quartz veins that cut both intrusive and metasedimentary rocks.
Workings: Vein exposed in a 2 ft open cut. Samples taken indicate 0.01 oz/ton Au, 1.4 oz/ton Ag, and 1.12 percent Pb (Park, 1933).
Age: Tertiary or younger; veins cut Late Cretaceous Valdez Group rocks and Teriary intrusive rocks.
Alteration: The intrusive rocks have undergone argillic alteration. Oxidation of iron minerals.
Commodities (Major) - Ag, Au, Pb
Development Status: None
Deposit Model: Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; model 36a.1)
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: | AN106 |
|---|
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