Galena Bay Mining Co. Prospects (Vesuvius Valley), Copper River Mining District, Valdez-Cordova Census Area, Alaska, USAi
Regional Level Types | |
---|---|
Galena Bay Mining Co. Prospects (Vesuvius Valley) | Group of Prospects |
Copper River Mining District | Mining District |
Valdez-Cordova Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
60° 52' 40'' North , 146° 35' 38'' West
Latitude & Longitude (decimal):
Type:
Group of Prospects
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Valdez | 3,870 (2017) | 31.1km |
Mindat Locality ID:
197596
Long-form identifier:
mindat:1:2:197596:6
GUID (UUID V4):
9900ff19-9998-4a81-be0b-25f112d9ef2d
Nelson and others (1985) interpret the country rocks as accreted ocean crust. Crowe and others (1992; 1993) and Sainsbury (1993) discuss the genesis of the volcanogenic massive sulfide deposits in this area. Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.
Location: This site represents several prospects in a roughly circular, half-mile-square, area at about 2000 feet elevation on the northeast face of Bells Butte. The area is in the N1/2 secs. 26 and 35, T. 11 S., R. 8 W., of the Copper River Meridian. The location is accurate to within 1000 ft. This area of prospects is shown in Cobb (1972: MF-392) as sites #9 and #10; in Jansons and others it is shown as site C-83.
Geology: The country rocks at these prospects are mafic volcanic rocks and sedimentary rocks of the Tertiary Orca Group (Nelson and others, 1985). The deposit consists of shear-zone-hosted masses of calcite, quartz, chalcopyrite, pyrite, pyrrhotite, and sphalerite. Capps and Johnson (1915) reported that most of the ore was found in numerous 1- to 20-ft.-wide shear zones in pillow basalt (greenstone). The shear zone containing most of the early workings is 1000 ft. long. Jansons and others (1984) collected chip samples that contained 58 ppm to 13% Cu, 46 ppm to 2% Zn, and <0.1 ppm to 32.8 ppm Ag; their grab samples contained 80 ppm to 6.1% Cu, 790 ppm to 20.1% Zn, and 1.1 ppm to 20 ppm Ag. Small amounts of gold were reported in earlier assays (Capps and Johnson, 1915).
Workings: Capps and Johnson (1915) reported nine adits with a total of about 3000 ft. of underground workings, and some open cuts and buildings. The longest (2200 ft) adit was caved by the early 1980s (Jansons and others, 1984). Jansons and others (1984) collected chip samples that contained 58 ppm to 13% Cu, 46 ppm to 2% Zn, and <0.1 ppm to 32.8 ppm Ag; their grab samples contained 80 ppm to 6.1% Cu, 790 ppm to 20.1% Zn, and 1.1 ppm to 20 ppm Ag. Small amounts of gold were reported in earlier assays (Capps and Johnson, 1915).
Age: Probably Tertiary based on the age of the host rocks.
Reserves: Inferred reserves of 5,800 tons @ 7.9% Cu, 1.3% Zn, and 5 ppm Ag (Jansons and others, 1984).
Commodities (Major) - Cu, Zn; (Minor) - Ag, Au
Development Status: None
Deposit Model: Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
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
6 valid minerals.
Detailed Mineral List:
β Calcite Formula: CaCO3 |
β Chalcopyrite Formula: CuFeS2 |
β Pyrite Formula: FeS2 |
β Pyrrhotite Formula: Fe1-xS |
β Quartz Formula: SiO2 |
β Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Sphalerite | 2.CB.05a | ZnS |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Pyrrhotite | 2.CC.10 | Fe1-xS |
β | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
β | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
β | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | β Calcite | CaCO3 |
O | Oxygen | |
O | β Calcite | CaCO3 |
O | β Quartz | SiO2 |
Si | Silicon | |
Si | β Quartz | SiO2 |
S | Sulfur | |
S | β Chalcopyrite | CuFeS2 |
S | β Pyrite | FeS2 |
S | β Pyrrhotite | Fe1-xS |
S | β Sphalerite | ZnS |
Ca | Calcium | |
Ca | β Calcite | CaCO3 |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Pyrite | FeS2 |
Fe | β Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | β Sphalerite | ZnS |
Other Databases
Link to USGS - Alaska: | CV011 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Yakutat-Malaspina DomainDomain
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