Kav Occurrence, Noatak Mining District, Northwest Arctic Borough, Alaska, USAi
Regional Level Types | |
---|---|
Kav Occurrence | Occurrence |
Noatak Mining District | Mining District |
Northwest Arctic Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
67° 48' 36'' North , 156° 45' 36'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
198318
Long-form identifier:
mindat:1:2:198318:3
GUID (UUID V4):
028fdf27-ce8b-4a13-aef2-6ac9fb499159
Three minor occurrences of malachite are present along the north slope of the mountain immediately southwest of Kav occurrence. All occurrences are located within Noatak National Preserve.
Location: Located west of Kavachurak Creek at approximately 2000 ft. (600 m) elevation in T. 28 N., R 9 E., Kateel River Meridian. Shown as locality 71 in Mayfield and Grybeck (1978) and accurate to within 2000 ft. (600 m).
Geology: Four occurrences of Cu-Ag mineralization over 0.15 sq. mi. (200 m sq.) area. Most interesting occurrence is a fan-shaped area of mineralized talus ranging from 5 ft. to 10 ft. (1.3 m to 3 m) wide over a slope distance of 300 ft. (100 m) that consists of dolomite breccia containing masses of tetrahedrite, tennantite, chalcopyrite, malachite and azurite, mixed with fragments of quartz-vein material containing chalcopyrite. Other three occurrences are quartz veins generally 0.5 to 6 in. (1 cm to 12 cm) wide (one vein 1.5 ft. (0.3 m) wide) having strike lengths up to 75 ft. (15 m), and quartz stringer zones 40 ft. to 100 ft. (10.5 m to 30 m) wide, carrying tetrahedrite, chalcopyrite and malachite. Host rock is brecciated dolomite overlain by limestone and underlain by limestone, marble, and a sequence of phyllites; dolomite breccia forms prominent rust-colored hills (Degenhart and others, 1978, p.351-371)
Workings: Two samples representative of mineralized dolomite breccia contained 18.6% Cu over 36 ft. (12 m) length, and 33.8% Cu over 50 ft. (17 m) length. One 4 to 6 in. (8 cm to 12 cm) wide quartz vein assayed 6.2% Cu, 0.62% Zn, 4.9 oz/ton (152g/ton) Ag, and 3.2% Sb. Another 40 ft. (13 m) chip sample across a stringer zone assayed 0.8% Cu, 0.48 oz/ton (15g/ton) Ag (Degenhart and others, 1978, p. 351-371).
Alteration: Fe-staining
Commodities (Major) - Ag, Cu, Sb
Development Status: No
Deposit Model: Kipushi?
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
3 valid minerals.
Detailed Mineral List:
ⓘ Azurite Formula: Cu3(CO3)2(OH)2 |
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
ⓘ 'Tennantite Subgroup' Formula: Cu6(Cu4C2+2)As4S12S |
ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | 'Tennantite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)As4S12S |
ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
H | ⓘ Malachite | Cu2(CO3)(OH)2 |
C | Carbon | |
C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
C | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
O | ⓘ Malachite | Cu2(CO3)(OH)2 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Cu | Copper | |
Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Cu | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
As | Arsenic | |
As | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
Sb | Antimony | |
Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Other Databases
Link to USGS - Alaska: | AR063 |
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Other Regions, Features and Areas containing this locality
North America
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
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