William Henry prospect, Haines, Alaska, USAi
| Regional Level Types | |
|---|---|
| William Henry prospect | Prospect |
| Haines | City Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
58° 44' 39'' North , 135° 17' 22'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Location: A Cu-Pb-REE-Zn-Au occurrence/prospect located in the SW¼ sec. 17, T36S, R61E of the Copper River Meridian, comprised of the Lucky Six (JU057), William Henry (JU060), Kings View (JU058), Athero (JU062), and an unnamed occurrence (JU059) on the West flank of William Henry Mountain, 2 miles west of Lynn Canal, at 3,300 feet of elevation, on federal reservation wilderness land (Endicott River Wilderness/Glacier Bay National Monument Wilderness Study Area), and collectively referred to as the William Henry prospect, or as being in the William Henry area. The location is accurate within ¼ mile.
Geology: The general area is underlain mainly by Silurian and Devonian graywacke and argillite and Middle Devonian carbonate, clastic and volcanic rocks (MacKevett and others, 1971; Brew and others,1978). The country rocks at this prospect are Silurian graywacke and Devonian and Silurian greenstone intruded by small bodies of Cretaceous quartz monzonite and syenite (Clough and Redman, 1989). The quartz monzonite, which contains feldspars crystals up to 4 inches long, contains disseminated pyrite, and is highly altered to sericite, chlorite, epidote and clay minerals. The sedimentary and volcanic country rocks are silicified and contain disseminated pyrite. Carbonatite forms northwest-trending veins up to a foot (0.31 meter) thick. They are composed mostly of calcite and minor feldspar phenocrysts. The veins carry variable amounts of pyrite, galena, molybdenite, barite, rutile and biotite. Analyses of the veins show small amounts of rare-earth elements and elevated values of Cu, Zn and Au. The area has been explored for uranium-thorium minerals (Clough and Redman, 1989).
Workings: Surface sampling and mapping.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. |
| ⓘ Calcite Formula: CaCO3 Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. |
| ⓘ 'Feldspar Group' Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. |
| ⓘ Galena Formula: PbS Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. |
| ⓘ Molybdenite Formula: MoS2 Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. |
| ⓘ Pyrite Formula: FeS2 Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. |
| ⓘ Uraninite Formula: UO2 Reference: Eakins, G.R. Uranium Investigations in Southeastern Alaska. AK Div. of Geol. and Geophys. Surv. Geol. Rep. 44, 1975, 62 pp. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Uraninite | 4.DL.05 | UO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Feldspar Group' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Uraninite | UO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Galena | PbS |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| U | Uranium | |
| U | ⓘ Uraninite | UO2 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G. (1971), Mineral resources of Glacier Bay National Monument, Alaska: USGS Professional Paper 632, 90 p., 12 plates, scale 1:250,000.
Eakins, G.R. (1975), Uranium investigations in southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 44, 62 p.
Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L. (1978), Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: USGS Open-File Report 78-494, 670 p., 7 sheets.
Clough, A.H., and Redman, E.C. (1989), Bureau of Mines mineral investigations in the Juneau mining district, Alaska, 1984-1988, Volume 2, Detailed mine, prospect, and mineral occurrence descriptions, Section C, West Lynn Canal subarea: U.S. Bureau of Mines of Mines Special Publication, 44 p.
Other Databases
| Link to USGS - Alaska: | JU060 |
|---|
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William Henry prospect, Haines, Alaska, USA