Head-Of-The-Bay Prospect (Cordova - Tacoma Copper Co.), Copper River Mining District, Valdez-Cordova Census Area, Alaska, USAi
Regional Level Types | |
---|---|
Head-Of-The-Bay Prospect (Cordova - Tacoma Copper Co.) | Prospect |
Copper River Mining District | Mining District |
Valdez-Cordova Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
60° 39' 46'' North , 145° 33' 3'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Cordova | 2,196 (2017) | 17.5km |
Mindat Locality ID:
197927
Long-form identifier:
mindat:1:2:197927:8
GUID (UUID V4):
6c9f3fc3-dd45-4038-a96f-04edfa3cc6ce
Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.
Location: This prospect is at an elevation of about 1500 feet near the head of Wesley Falls Creek. It is in the SE1/4 sec. 10, T 14 S., R. 2 W., of the Copper River Meridian. Location is accurate to within 1000 ft. Location corresponds to site C-21 of Jansons and others (1984).
Geology: This prospect consists of chalcopyrite and pyrrhotite in fracture zones and as disseminations in the wallrocks in interbedded graywacke, slate, and volcanic rocks of the Tertiary Orca Group (Nelson and others, 1985). Four shear zones 1 to 5 feet wide cut the volcanic rocks.
Workings: One adit observed in 1980 (Jansons and others, 1984) and reported by Grant and Higgins (1910). Two adits noted during industry exploration activity in 1986. The two adits are approximately 1/4 mile apart (B. Ellis, personal commun., 2000). Sampling and analyses during the 1980s by the U.S. Bureau of Mines (Jansons and others, 1984) resulted in the following values: Six chip samples contained 650 ppm to 4.05% Cu, 3.5 to 310 ppm Zn, and <0.1 to 1.8 ppm Ag. Two grab samples contained 4.6% and 5.2% Cu, 360 ppm and 0.15% Zn, and 8.8 ppm and 11 ppm Ag.
Age: Probably Tertiary based on age of host rock (Nelson and others, 1985).
Reserves: Inferred reserves of 800 tons @ 0.6% Cu (Jansons and others, 1984).
Commodities (Major) - Cu; (Minor) - Ag, Zn
Development Status: None
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 |
ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
S | Sulfur | |
---|---|---|
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Pyrrhotite | Fe1-xS |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
Link to USGS - Alaska: | CV049 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Yakutat-Malaspina DomainDomain
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