Unnamed Occurrence (ARDF - TN070; near Chapman Creek), Rampart Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - TN070; near Chapman Creek) | - not defined - |
| Rampart Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 18' 56'' North , 150° 0' 10'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201847
Long-form identifier:
mindat:1:2:201847:1
GUID (UUID V4):
c1352669-be99-4df4-826f-d10109773fee
Location: This lode prospect is about 3 miles upstream from the Chapman Creek placer mine (TN056). It is in the southeast quarter of section 27, T. 6 N., R. 12 W., and corresponds to location 11 of Cobb (1972). The location is accurate within half a mile.
Geology: Chapman Creek drains an area underlain by Mesozoic sandstone, shale, and argillite (Chapman and others, 1982; Reifenstuhl and others, 1997 [RI 97-15a]). Granite of unknown age crops out in the headwaters of the creek (Burand and Saunders, 1966). The main channel follows a high-angle fault. Burand and Saunders (1966) reported a stibnite occurrence in the headwaters, near the granite. Swainbank and others (1995) report that exploration by ASA, Inc., and Montague Gold NL at the Chapman Creek prospect in 1994 found a swarm of monzonite dikes marked by intense sericite, dolomite, and silica alteration. Samples of this material contained up to 0.035 ounce of gold per ton. Gold-in-soil anomalies indicate the potential for substantial mineralization.
Workings: Swainbank and others (1995) report that exploration by ASA, Inc., and Montague Gold NL at the Chapman Creek prospect in 1994 found a swarm of monzonite dikes marked by intense sericite, dolomite, and silica alteration. Samples of this material contained up to 0.035 ounce of gold per ton. Gold-in-soil anomalies indicate the potential for substantial mineralization. ASA, Inc., recommended drilling for 1995.
Alteration: Intense sericite, dolomite, and silica alteration.
Commodities (Major) - Au, Sb
Development Status: None
Deposit Model: Simple Sb deposits (Cox and Singer, 1986; model 27d).
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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
Other Databases
| Link to USGS - Alaska: | TN070 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wickersham DomainDomain
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References
