Croesus Prospect, Kitkun Bay, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Croesus Prospect | Prospect |
| Kitkun Bay | Bay |
| Prince of Wales Island | Island |
| Ketchikan Mining District | Mining District |
| Prince of Wales-Hyder Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
55° 9' 11'' North , 132° 10' 33'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hollis | 112 (2011) | 53.5km |
Location: The Croesus prospect is east of the head of Kitkun Bay at an elevation of about 900 feet. It is 0.3 mile west of hill 1305 and about 0.5 mile east-northeast of the center of section 32, T. 77 S., R. 88 E.
Geology: The Croesus prospect was discovered prior to 1902 and by 1908, two tunnels, one 350 feet long and the other 135 feet long, had been driven on a quartz vein that strikes north and dips 85E (Brooks, 1902; Wright and Wright, 1908; Maas and others, 1991). The workings also include a 20-foot adit, a caved shaft, and at least one trench. Some rich ore was found but the ore streaks are small and faulted (Brooks, 1902; Wright and Wright, 1908; Smith, 1914; Bufvers, 1967). The rocks in the vicinity consist of greenschist and marble of the Wales Group of Late Proterozoic and Cambrian age (Eberlein and others, 1983; Brew, 1996). Apparently, there was no further exploration work after 1913. Maas and others (1991) collected 22 samples. Their highest gold value was 0.624 ounce per ton across 5.2 feet; there were a considerable number of assays above 0.3 ounce of gold per ton, but the other metal values were uniformly low. Based on extensive soil sampling, Hedderly-Smith (1999 [Inventory]) suggests that the veins may extend for about 1,000 feet along strike and that the mineralization is probably more extensive than previously recognized.
Workings: One vein was explored by a 135-foot tunnel and a 350-foot tunnel. The workings also include a 20-foot adit, a caved shaft, and at least one trench. Sampled by government and industry geologists in the late 1980's.
Age: Veins are younger than the Late Proterozoic or Cambrian host rocks.
Commodities (Major) - Au
Development Status: None
Deposit Model: Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).
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 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
Other Databases
| Link to USGS - Alaska: | CR178 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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