Lucile; Feickert Prospect, Nichols Bay, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
54° 44' 42'' North , 132° 9' 3'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: The Lucile prospect is about one-half mile up the eastern stream at the head of Nichols Bay; it is about in the center of section 20, T. 82 S, R. 89 E. Cobb (1972) shows this as one of the Feickert prospects. Maas and others (1991) recently sampled and described the prospect under the name Lucile.
Geology: Mapping by Gehrels (1992) places the Lucile or Feickert prospect on or near a prominent, north-trending fault which he calls the Feickert Claims Fault. The rocks west of the fault are banded mudstone and siltstone with interbedded limestone of the Silurian or Ordovician Descon Formation. The rocks east of the fault are silicic volcanic rocks of the Descon Formation. Chapin (1918) describes this site as one of the Feickert prospects--a chalcopyrite-bearing quartz vein in andesitic greenstone that was explored by a shaft and open cuts. Maas and others (1991) noted a shaft with a dump, and two adits, one 17 feet long and the other 18 feet long. They collected several samples that contained up to 9 parts per billion gold, 415 parts per million (ppm) copper, 3,870 ppm lead, and 4,865 ppm zinc. Gehrels (1992) shows numerous sites of 'mineralized rock' for about a half mile west of the Feickert Claims Fault at the head of Nichols Bay, but provides no details.
Workings: Maas and others (1991) noted a shaft with a dump, and two adits, one 17 feet long and the other 18 feet long.
Age: The rocks at the Lucile prospect are sedimentary and silicic volcanics rocks of the Silurian or Ordovician Descon Formation, but it is unclear whether the deposit is syngenetic or epigenetic.
Commodities (Major) - Cu, Pb, Zn
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.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | DE050 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
- Queen Charlotte basinBasin
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