Unnamed Occurrence (ARDF - WI086; near Mathews Dome), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types | |
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Unnamed Occurrence (ARDF - WI086; near Mathews Dome) | - not defined - |
Koyukuk Mining District | Mining District |
Yukon-Koyukuk Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
67° 29' 0'' North , 151° 18' 32'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201945
Long-form identifier:
mindat:1:2:201945:4
GUID (UUID V4):
4a0c95cd-3b17-40c6-a460-517fb2204354
Location: This occurrence represents several rock samples taken over a distance of about 2000 feet immediately north of the summit of Mathews Dome. The occurrence is centered at about an elevation of about 4,100 feet,on the ridge about 0.2 mile north-northwest of the 4618-foot peak of Mathews Dome. The location is accurate.
Geology: This occurrence consists of bornite, malachite, and possibly tetrahedrite in quartz veins, altered calc-schist, and schist; the rocks in the area consist of Devonian phyllite, schist, and subordinate limestone/dolomite (Chipp, 1972). Seven samples contain up to 0.1 ppm gold, 14 ppm,m silver, and 2.1% copper. No other information is available on this occurrence.
Workings: Field examination of mineralization and analysis of grab samples.
Alteration: Oxidation of copper mineral(s). One sample of a calc-schist is described as altered, but no description of the alteration is available.
Commodities (Major) - Au, Ag, Cu
Development Status: None
Deposit Model: Polymetallic vein(?) (Cox and Singer, 1986; model 22c)
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
4 valid minerals.
Detailed Mineral List:
ⓘ Bornite Formula: Cu5FeS4 |
ⓘ Calcite Formula: CaCO3 |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
ⓘ Quartz Formula: SiO2 |
ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | 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 | ⓘ Calcite | CaCO3 |
C | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Malachite | Cu2(CO3)(OH)2 |
O | ⓘ Quartz | SiO2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Bornite | Cu5FeS4 |
S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Ca | Calcium | |
Ca | ⓘ Calcite | CaCO3 |
Fe | Iron | |
Fe | ⓘ Bornite | Cu5FeS4 |
Cu | Copper | |
Cu | ⓘ Bornite | Cu5FeS4 |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Sb | Antimony | |
Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Other Databases
Link to USGS - Alaska: | WI086 |
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Other Regions, Features and Areas containing this locality
North America
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainDomain
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