Addison Powell Prospect, Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
Regional Level Types | |
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Addison Powell Prospect | Prospect |
Prince William Sound Mining District | Mining District |
Valdez-Cordova Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
61° 0' 45'' North , 146° 5' 52'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
196164
Long-form identifier:
mindat:1:2:196164:8
GUID (UUID V4):
494342f5-2881-45ee-9411-368c186abd75
Location: This prospect is on the north side of the valley of an unnamed south tributary to the lower Lowe River. The mouth of this tributary is 3.3 miles upstream from Canyon Slough. The prospect is at an elevation of about 1,500 feet in the center of the S1/2 section 10, T. 10 S., R. 5 W., of the Copper River Meridian. This prospect is probably located to within one-half mile. It is locality 41 of Cobb and Matson (1972) and locality 33A of Winkler and others (1981 [OFR 80-892-B]).
Geology: Stratiform lenses and disseminations of sulfide minerals occur in mafic metavolcanic rocks and metasedimentary rocks of the Valdez Group; the sulfide minerals include chalcopyrite, pyrite, pyrrhotite, and sphalerite (Winkler, Miller, and others, 1981). Early work on this prospect described it as a large but low-grade deposit with chalcopyrite, some malachite, and a little gold. It was explored by about 150 feet of open cuts and a 100-foot-long adit (Johnson, 1916). The metavolcanic rocks probably represent ocean-floor basalts that were accreted with the flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]).
Workings: Early work on this prospect included about 150 feet of open cuts and a 100-foot-long adit (Johnson, 1916).
Age: Late Cretaceous; the host metavolcanic rocks probably represent ocean-floor basalts that were accreted along the enclosing flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]).
Alteration: Oxidation; the deposits are iron-stained (Winkler and others, 1981 [OFR 80-892-B]).
Commodities (Major) - Cu; (Minor) - Ag, Au, Zn
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:
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Gold Formula: Au |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
ⓘ Pyrite Formula: FeS2 |
ⓘ Pyrrhotite Formula: Fe1-xS |
ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Gold | 1.AA.05 | Au |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Sphalerite | 2.CB.05a | ZnS |
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Malachite | Cu2(CO3)(OH)2 |
C | Carbon | |
C | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | ⓘ Malachite | Cu2(CO3)(OH)2 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Pyrite | FeS2 |
S | ⓘ Pyrrhotite | Fe1-xS |
S | ⓘ Sphalerite | ZnS |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Zn | Zinc | |
Zn | ⓘ Sphalerite | ZnS |
Au | Gold | |
Au | ⓘ Gold | Au |
Other Databases
Link to USGS - Alaska: | VA134 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Yakutat-Malaspina DomainDomain
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