Unnamed Occurrence (ARDF - CA014; on Weather Ridge), Fairhaven Mining District, Northwest Arctic Borough, Alaska, USAi
Regional Level Types | |
---|---|
Unnamed Occurrence (ARDF - CA014; on Weather Ridge) | - not defined - |
Fairhaven Mining District | Mining District |
Northwest Arctic Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
65° 27' 39'' North , 161° 23' 52'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200582
Long-form identifier:
mindat:1:2:200582:2
GUID (UUID V4):
327c6f19-de34-4d42-9320-e95e35959c0d
This site is one of numerous occurrences of argentiferous galena, sphalerite, pyrite, and arsenopyrite in an 18-mile-long, 2- to 5-mile-wide altered zone in andesite surrounding the hook-shaped Quartz Creek quartz monzonite pluton. The alteration zone extends N 15 W across the drainage basins of Quartz Creek and the Kiwalik River.
Location: This occurrence is at an elevation of about 1,450 feet at the southeast end of Weather Ridge. This site is in section 28, T. 1 N., R. 13 W., of the Kateel River Meridian. The location is accurate to within 0.3 mile radius. Cobb, 1972 (MF-389), location 11; Miller and Elliott (1969), sample location 34, figure 2.
Geology: This occurrence is located adjacent to the mid-Cretaceous Quartz Creek pluton, a hook-shaped, quartz monzonite body. The pluton is surrounded by a N 15 W-trending alteration zone about 18 miles long and 2 to 5 miles wide. The alteration zone is in Jurassic-Cretaceous andesitic volcanic rocks and is marked by quartz veins and possibly tourmaline. Fine-grained dikes of varying composition cut the andesites near the pluton. Dikes near the Quartz Creek pluton are locally mineralized. At this occurrence, galena, sphalerite, and pyrite are disseminated in quartz veins cutting altered andesite. A sample of a sulfide-bearing quartz vein (Miller and Elliott, 1969, location 34) contained: 150 ppm Ag (4.35 ounces Ag per ton), greater than 2% Pb, greater than 1% Zn, trace Au, and 500 ppm Cu.
Workings: The area was first identified and mapped by the U.S. Geological Survey in the late 1960's (Miller and Elliott, 1969). It subsequently has been examined by various exploration companies. In the mid 1970's an exploration program including some drilling was completed by Greatland Exploration, Anchorage, Alaska.
Age: Mid-Cretaceous or younger.
Alteration: Quartz and tourmaline?
Commodities (Major) - Ag, Pb, Zn; (Minor) - Au, Cu
Development Status: None
Deposit Model: Sulfides in altered andesite.
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 |
ⓘ Galena Formula: PbS |
ⓘ Galena var. Silver-bearing Galena Formula: PbS with Ag |
ⓘ Gold Formula: Au |
ⓘ Pyrite Formula: FeS2 |
ⓘ Quartz Formula: SiO2 |
ⓘ Sphalerite Formula: ZnS |
ⓘ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
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 |
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | var. Silver-bearing Galena | 2.CD.10 | PbS with Ag |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
Unclassified | |||
ⓘ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
List of minerals for each chemical element
B | Boron | |
---|---|---|
B | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
O | Oxygen | |
O | ⓘ Quartz | SiO2 |
O | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Galena | PbS |
S | ⓘ Pyrite | FeS2 |
S | ⓘ Sphalerite | ZnS |
S | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrite | FeS2 |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | ⓘ Sphalerite | ZnS |
Ag | Silver | |
Ag | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
Au | Gold | |
Au | ⓘ Gold | Au |
Pb | Lead | |
Pb | ⓘ Galena | PbS |
Pb | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
Other Databases
Link to USGS - Alaska: | CA014 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Koyukuk-Selawik DomainDomain
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