Flint Creek Prospect, Ruby Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Flint Creek Prospect | Prospect |
| Ruby Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 23' 19'' North , 155° 21' 10'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ruby | 165 (2017) | 39.5km |
Tributaries of Flint Creek along which there are prospects or mines include Granite Creek (RB025), Eldorado Creek (RB026), Root Creek (RB032), Gold Run (RB033), Glen Gulch (RB030), Lucky Creek (RB034), and Birch Creek (RB035). Additionally, tributaries Straight Creek (RB029), Crooked Creek (RB031), and Lucky Creek (RB027) tributary of Birch Creek contain gold.
Location: Flint Creek is location 17 of Cobb. Flint Creek is a northeast-flowing tributary of the Sulatna River. The better prospects are found on the bench along the west side of the creek, between Gold Run and Eldorado Creek. The coordinates given mark the approximate locations of the better prospects found in section 5, T. 13 S., R. 18 E. of the Kateel River merdian. This placer area corresponds to location 17 of Cobb (1972 [MF405]) although Cobb locates the Flint Creek prospect approximately 1 mile further north, just downstream of Gold Run Creek. As a result, accuracy is within 1 1/2 miles.
Geology: Flint Creek drains the contact zone of a granitic body with phyllite and quartzite (Mertie, 1936). Prospectors first identified gold on Flint Creek in 1911 (Maddren, 1912). There is no data concerning any actual mining at Flint Creek, and the area probably was not mined. Later years of prospecting resulted in poorer results than in 1911 (Mertie, 1936; White and Stevens, 1953). Cassiterite was found in heavy mineral concentrates. Concentrates of gravels derived from the granite also contained a uranium-thorium mineral (possibly uranothorite), sphene, allanite, ilmenite, magnetite, and zircon (White and Stevens, 1953). Bismuth was reported in a spectrographic analysis of uranothorite, but no bismuth mineral was found (White and Stevens, 1953).
Workings: Flint Creek was prospected between 1911 and at least 1936. Chapman and others (1963) speculated that the results were probably never good enough to warrant mining.
Age: Quaternary.
Commodities (Major) - Au; (Minor) - Bi?, Sn, Th, U
Development Status: Undetermined.
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
3 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Native Gold Formula: Au |
| ⓘ Thorite Formula: Th(SiO4) |
| ⓘ Thorite var. Uranothorite Formula: (Th,U)SiO4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| Group 9 - Silicates | |||
| ⓘ | Thorite | 9.AD.30 | Th(SiO4) |
| ⓘ | var. Uranothorite | 9.AD.30 | (Th,U)SiO4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Thorite | Th(SiO4) |
| O | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
| Si | Silicon | |
| Si | ⓘ Thorite | Th(SiO4) |
| Si | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Th | Thorium | |
| Th | ⓘ Thorite | Th(SiO4) |
| Th | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
| U | Uranium | |
| U | ⓘ Thorite var. Uranothorite | (Th,U)SiO4 |
Other Databases
| Link to USGS - Alaska: | RB036 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ruby DomainDomain
- Ruby TerraneAccretionary Complex
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