Crooked Creek Mine, Ruby Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Crooked Creek Mine | Mine |
| Ruby Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 27' 24'' North , 155° 22' 33'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ruby | 165 (2017) | 31.9km |
Mindat Locality ID:
197101
Long-form identifier:
mindat:1:2:197101:2
GUID (UUID V4):
3cc0b6fa-7613-43b1-a6ce-a7375cdbc082
See also Birch Creek (RB035).
Location: Crooked Creek is marked by a strip mine labeled on the Ruby B-5 quadrangle (USGS topographic map, 1952, minor revisions in 1973). The mine is located just north of Crooked Creek, on a west bench of Birch Creek. The above coordinates mark the center of mining and correspond to location 7 of Cobb (1972 [MF405]), in section 12, T. 12 S., R. 17 E. of the Kateel River Meridian. The location is accurate.
Geology: The type of bedrock underlying the Crooked Creek mine is not known because of the substantial thickness of Quaternary deposits (Puchner and others, 1998). A small pay streak is located near the mouth of Crooked Creek itself, and further deposits are located several hundred yards up Crooked Creek from Birch Creek (Chapman and others, 1963). The downstream deposits of Crooked Creek mix with the cassiterite-bearing Birch Creek deposits and Cobb and Chapman (1981) speculate that at least some of the Crooked Creek deposits contained cassiterite although there is no record of any recovered (Cobb and Chapman, 1981). Shafts were first sunk approximately 50 feet to bedrock on a low silt terrace south of the creek prior to 1936, however, only a little gold was found (Mertie, 1936). Intermittent mining has been done on the area from its discovery to the present. Strip mining has been done on the lower part of the creek (Eberlein and others, 1977).
Workings: Shafts were sunk approximately 50 feet to bedrock, and strip mining was done on the lower part of the creek (Mertie, 1936; Eberlein and others, 1977).
Age: Quaternary?
Commodities (Major) - Au; (Minor) - Sn
Development Status: Yes; small
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Cassiterite | SnO2 |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | RB031 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Ruby DomainDomain
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References
