Ketchem Dome Area Mines, Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Ketchem Dome Area Mines | Group of Mines |
| Circle Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 24' 28'' North , 144° 52' 29'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
See also Ketchem Creek, ARDF no. CI031, Bottom Dollar Creek, ARDF no. CI007 and Deadwood Creek, ARDF no. CI014.
Location: The location is roughly the center of a productive placer area of approximately 80 square miles. It includes the following main drainages: Deadwood Creek, Ketchem Creek and Bottom Dollar Creek.
Geology: The creeks around Ketchem Dome drain a variety of rock types. To the north and northeast of Ketchem Dome, Ketchem and Holdem Creeks drain an area underlain by Tertiary granite. To the south, the Bottom Dollar Creek drainage is underlain by both Cretaceous granite and quartz-muscovite schist - the Lower Schist unit desribed by Wiltse and others (1995). Deadwood Creek drainage to the northwest is underlain both by Tertiary granite and the quartz-muscovite Lower Schist. Gold is found in the gravel close to bedrock and in cracks in the bedrock. Placer gold has been mined on several creeks within this area that have been described separately (see Workings and Exploration).
Workings: See Ketchem Creek, ARDF no. CI031, Bottom Dollar Creek, ARDF no. CI007 and Deadwood Creek, ARDF no. CI014 for site-specific workings and exploration.
Production: See Ketchem Creek, ARDF no. CI031, Bottom Dollar Creek, ARDF no. CI007 and Deadwood Creek, ARDF no. CI014 for specific site-production notes.
Commodities (Major) - Au; (Minor) - Ag, Hg, Sn, W
Development Status: Yes; small
Deposit Model: Placer gold deposit (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
5 valid minerals.
Detailed Mineral List:
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Cinnabar Formula: HgS |
| ⓘ Native Gold Formula: Au |
| ⓘ Native Silver Formula: Ag |
| ⓘ Scheelite Formula: Ca(WO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Scheelite | Ca(WO4) |
| S | Sulfur | |
| S | ⓘ Cinnabar | HgS |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS - Alaska: | CI033 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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