Grayson Lode, Seward Mining District, Kenai Peninsula Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Grayson Lode | Lode |
| Seward Mining District | Mining District |
| Kenai Peninsula Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
60° 14' 49'' North , 149° 25' 8'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bear Creek | 1,956 (2017) | 9.3km |
| Primrose | 111 (2006) | 15.5km |
| Seward | 2,790 (2017) | 15.9km |
| Moose Pass | 219 (2014) | 26.9km |
| Cooper Landing | 289 (2017) | 35.1km |
Location: The prospect is located on Lost Creek about 700 feet east of the Lost Lake Trail at an elevation of 1,900 feet. It is situated in the SE1/4 section 22, T. 2 N., R. 1 W., of the Seward Meridian. This is location S-208 of Jansons and others (1984). This location is accurate to within 1,000 feet.
Geology: The prospect consists of a 12-inch-wide vuggy quartz vein with large arsenopyrite crystals (Hoekzema and Sherman, 1983). The vein occurs along a north-south shear zone that can be traced about 150 feet along strike. A small prospect pit and trench explored the vein. Nelson and others (1985) mapped bedrock in this area as slate of the Valdez Group of Late Cretaceous age. A sample collected in 1982 contained 1,850 ppm arsenic and no detectable gold (Hoekzema and Sherman, 1983).
Workings: Workings on the prospect consisted of a small pit and a trench. The U.S. Bureau of Mines collected a grab sample in 1982 that contained 1,850 ppm arsenic and no detectable gold (Jansons and others, 1984).
Age: Cretaceous or younger; the vein cuts rocks of the Valdez Group of Late Cretaceous age.
Commodities (Major) - Au
Development Status: None
Deposit Model: Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| 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 | ⓘ Arsenopyrite | FeAsS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
Other Databases
| Link to USGS - Alaska: | SR276 |
|---|
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