REC 3-9 Occurrence, Hope Mining District, Kenai Peninsula Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| REC 3-9 Occurrence | Occurrence |
| Hope Mining District | Mining District |
| Kenai Peninsula Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
60° 26' 15'' North , 149° 22' 22'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Moose Pass | 219 (2014) | 5.6km |
| Primrose | 111 (2006) | 7.1km |
| Cooper Landing | 289 (2017) | 25.5km |
| Bear Creek | 1,956 (2017) | 30.4km |
| Seward | 2,790 (2017) | 37.2km |
Location: The occurrence is located in the road cut along the Seward Highway north of the bridge at the south end of Lower Trail Lake. It is in the center of section 13, T. 4 N., R. 1 W., of the Seward Meridian. This is location S-232 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: This occurrence consists of argillite that is exposed along a road cut near the bridge across Trail River. Both the bedding and cleavage in the deposit strike north to N15E and dip 55SE (Eckhart and Plafker, 1959). The deposit is exposed along strike for 1,750 feet and for a vertical distance of 100 feet. In thin section, the rock consists of 25 percent o 50 percent silt-size particles embedded in a dark-colored matrix of clay-sized particles. Clear angular fragments of quartz and plagioclase along with white mica and chlorite comprise the rest of the rock. Accessory minerals are abundant magnetite, and scant epidote, garnet, tourmaline, carbonate, and zircon (Eckhart and Plafker, 1959). Nelson and others (1985) mapped this area as undivided sedimentary rock of the Valdez Group of Late Cretaceous age.
Workings: There are no workings or improvements reported in the literature. The occurrence was sampled in 1953 and exhibits favorable bloating characteristics at 2,200 -2,300 degrees F (Eckhart and Plafker, 1959). It would be suitable for haydite.
Age: Cretaceous or younger; the argillite is in rocks of the Valdez Group of Late Cretaceous age.
Reserves: The U.S. Bureau of Mines estimated a reserve of 50 million tons (Jansons and others, 1984).
Commodities (Major) - Argillite
Development Status: None
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Clay minerals' |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Unclassified | |||
| ⓘ | 'Clay minerals' | - | |
Other Databases
| Link to USGS - Alaska: | SR197 |
|---|
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