Mastodon Dome Area Mines (includes Mammoth Creek; Miller Creek; Eagle Creek; and Mastodon Creek), Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
65° 25' 1'' North , 145° 20' 20'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Mindat Locality ID:
198777
Long-form identifier:
mindat:1:2:198777:8
GUID (UUID V4):
cdd2b89e-df00-4be6-95b4-ff9e8fc1e9d1
See also Mastodon Creek, ARDF no. CI037, Eagle Creek, ARDF no. CI017, Miller Creek, ARDF no. CI039 and Mammoth Creek, ARDF no. CI036.
Location: Sites comprise productive placer area of approximately 120 sq. mi. including Mammoth Creek and its tributaries and the northeastern tributaries of Twelve Mile Creek. For specific site information see the following: Mammoth Creek, ARDF no. CI036, Miller Creek, ARDF no. CI039, Eagle Creek, ARDF no. CI017 and Mastodon Creek, ARDF no. CI037.
Geology: Bedrock in the Mastodon Dome area is varied. Eagle Creek drainage to the west of Mastodon Dome is underlain by both the Upper Quartzite and Upper Schist units described by Wiltse and others (1995). Mastodon Creek is underlain by the Middle Schist and Quartzite unit. Streams in this area have 5 to 10 feet of gravel under a few feet of muck. Gold is in the bottom few feet of gravel and in cracks in bedrock. Fineness of gold varied from 0.787-0.838 Au and 0.153-0.201 Ag.
Workings: See individual creeks for specific workings and exploration information: Mammoth Creek, ARDF no. CI036, Miller Creek, ARDF no. CI039, Eagle Creek, ARDF no. CI017 and Mastodon Creek, ARDF no. CI037.
Production: See individual creeks for specific production notes: Mammoth Creek, ARDF no. CI036, Miller Creek, ARDF no. CI039, Eagle Creek, ARDF no. CI017 and Mastodon Creek, ARDF no. CI037.
Commodities (Major) - Au; (Minor) - Ag, Sb, Sn, W
Development Status: Yes; medium
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
3 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Silver | 1.AA.05 | Ag |
ⓘ | 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 |
Ag | Silver | |
Ag | ⓘ Silver | Ag |
Sn | Tin | |
Sn | ⓘ Cassiterite | SnO2 |
Au | Gold | |
Au | ⓘ Gold | Au |
Other Databases
Link to USGS - Alaska: | CI038 |
---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.