Fortune Mine, Dolomi Mountain, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
Regional Level Types | |
---|---|
Fortune Mine | Mine |
Dolomi Mountain | Mountain |
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° 8' 35'' North , 132° 2' 52'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Metlakatla | 1,405 (2017) | 30.1km |
Ketchikan | 8,197 (2017) | 33.6km |
Saxman | 417 (2017) | 34.6km |
Mindat Locality ID:
197520
Long-form identifier:
mindat:1:2:197520:1
GUID (UUID V4):
a90eb34b-42d3-41f6-bb45-5bacfbf7ae56
Location: The Fortune Mine is located 1.8 km (5,800 feet) ESE of Dolomi Mountain (coordinates of record), about 0.2 mile W of Lake Williams and about 0.1 mile S of James Lake. It is near the SE corner of section 31, T77S, R89E.
Geology: As described by Brooks (1902), Wright and Wright (1908), Smith (1914), Chapin (1916), and Brooks and Capps (1924), the deposit at the Fortune Mine consists of 3 quartz veins 1 to 2 feet thick in graphitic schist with bands of marble. The veins strike N30W to N60W and dip 10 to 25N. They contain minor tetrahedrite, chalcopyrite, and pyrite. The Fortune Mine consists of a shallow shaft and several open cuts. There were small test shipments, one as late as 1922, but apparently no significant production. The schist and marble are part of the Wales Group of Late Proterozoic and Cambrian age (Herreid, 1967). The geology of the Dolomi area is dominated by an arcuate, generally north-trending, fault system and by a large dome centered over the eastern third of Paul Lake (Herreid, 1967). The Wales Group country rocks consist chiefly of several marble layers 200 to 1300 feet thick, interbedded with calcareous chlorite schist and marble.
Workings: The Fortune Mine consists of a shallow shaft and several open cuts.
Age: Veins are younger than the Late Proterozoic or Cambrian host rocks.
Production: There were small test shipments, one as late as 1922, but apparently no significant production.
Reserves: None.
Commodities (Major) - Ag, Au; (Minor) - Cu, Sb
Development Status: Yes; small
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
4 valid minerals.
Detailed Mineral List:
β Chalcopyrite Formula: CuFeS2 |
β Gold Formula: Au |
β Pyrite Formula: FeS2 |
β Quartz Formula: SiO2 |
β 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Gold | 1.AA.05 | Au |
Group 2 - Sulphides and Sulfosalts | |||
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Pyrite | 2.EB.05a | FeS2 |
β | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
Group 4 - Oxides and Hydroxides | |||
β | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | β Quartz | SiO2 |
Si | Silicon | |
Si | β Quartz | SiO2 |
S | Sulfur | |
S | β Chalcopyrite | CuFeS2 |
S | β Pyrite | FeS2 |
S | β Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Pyrite | FeS2 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Cu | β Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Sb | Antimony | |
Sb | β Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Au | Gold | |
Au | β Gold | Au |
Other Databases
Link to USGS - Alaska: | CR205 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
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