Last Chance Creek Mine, Kantishna Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Last Chance Creek Mine | Mine |
| Kantishna Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 35' 46'' North , 150° 47' 52'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
198458
Long-form identifier:
mindat:1:2:198458:6
GUID (UUID V4):
8d0f1606-770a-47b6-aa01-e084269b90fa
Last Chance Creek is in Denali National Park and Preserve.
Location: Last Chance Creek is a tributary of Caribou Creek, which it joins about one mile below Crevice Creek (MM046). Last Chance Creek heads against Glacier Peak and the unnamed ridge between Glacier and Spruce peaks. The location is about at the midpoint of the placer deposit, in the SW1/4 of section 23, T. 15 S., R. 17 W., Fairbanks Meridian. Placer resource block L-1 of Thornsberry, McKee, and Salisbury (1984, fig. K-3) encompasses all of the placer ground in this creek.
Geology: Last Chance Creek flows through a narrow, fairly steep, canyon. The bedrock is Birch Creek Schist (Thornsberry, McKee, and Salisbury, 1984, fig. K-2; Bundtzen, 1981). Sections of the creek have been mined by hand methods, and about 665 ounces of gold have been recovered. Most of the creek is too steep for significant gravel accumulation; there is a cumulative total of about 100,000 cubic yards of alluvium in several segments of the creek (Levell, 1984, v. 2). Three 0.1-cubic-yard samples collected in 1983 contained a trace to 0.0006 ounce of gold per cubic yard, but the samples did not represent the sections of the creek that have been mined (Levell, 1984, v. 2). Placer concentrates in lower Last Chance Creek and in Caribou Creek at the mouth of Last Chance Creek contain fragments of stibnite eroded from the Last Chance (Caribou) lode (MM043) (Prindle, 1907; Hawley and Associates, 1978).
Workings: There is evidence of hand-placer mining near the mouth of Last Chance Creek and at one locality upstream.
Age: Holocene.
Production: About 665 ounces is attributed to Last Chance Creek (Levell, 1984, v.2).
Reserves: There is a cumulative resource of about 100,000 cubic yards of alluvial gravel in several segments of the the creek; its gold content is unknown (Levell, 1984, v. 2).
Commodities (Major) - Au; (Minor) - Sb
Development Status: Yes; small
Deposit Model: Au-PGE placer 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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Stibnite | Sb2S3 |
| Sb | Antimony | |
| Sb | ⓘ Stibnite | Sb2S3 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | MM050 |
|---|
Other Regions, Features and Areas containing this locality
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References
