Amazon Prospects, Paul Lake, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 8' 20'' North , 132° 3' 10'' West
Latitude & Longitude (decimal):
Type:
Group of Prospects
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Metlakatla | 1,405 (2017) | 30.4km |
| Ketchikan | 8,197 (2017) | 34.2km |
| Saxman | 417 (2017) | 35.2km |
Mindat Locality ID:
196249
Long-form identifier:
mindat:1:2:196249:2
GUID (UUID V4):
716e294f-fc52-4a19-84c9-1da729fe2a3e
Location: According to Maas and others (1995), the Amazon prospect is about 0.3 mile east-southeast of the mouth of Paul Lake and about 0.3 mile northeast of the center of section 6, T. 78 S., R. 89 E. Their location is used in this record. Wright and Wright (1908, figure 18) place it about 0.3 mile to the north, but that location is suspect in view of their somewhat generalized, small-scale map.
Geology: As described by Wright and Wright (1905, 1908), the Amazon prospect is a quartz-breccia vein 5 to 10 feet thick that is conformable with the bedding in calcareous schist. The workings consisted of an inclined shaft 125 feet deep with 30-foot drifts to each side of the 50-foot level. There is no record of work after 1916. Maas and others (1991) located a flooded shaft, a dump, and exposures of the vein at the surface. Three samples--dump material, rubble at the shaft, and an outcrop of the vein--contained 4,455 parts per billion gold to 0.272 ounce of gold per ton. Houston Oil and Minerals drilled at or near this prospect in the early 1980's (Oliver and Adams, 1984). The vein cuts rocks of the Wales Group of Late Proterozoic and Cambrian age (Herreid, 1967). The Wales Group rocks are folded into a large dome centered over the eastern third of Paul Lake, and consist of several marble layers 200 to 1300 feet thick, interbedded with calcareous chlorite schist and marble.
Workings: The workings consisted of an inclined shaft 125 feet deep with 30-foot drifts to each side of the 50-foot level. Houston Oil and Minerals drilled at or near this prospect in the early 1980's (Oliver and Adams, 1984).
Age: Vein is 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: | CR209 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
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References
