Unnamed Occurrence (ARDF - MH219; southwest of VABM Canwell), Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
63° 19' 42'' North , 145° 41' 27'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201267
Long-form identifier:
mindat:1:2:201267:7
GUID (UUID V4):
dcd465ac-9eb2-4948-a01d-dd454077f3fd
Location: This occurrence is at an elevation of 4,200 feet about 0.4 mile southwest of VABM Canwell, near the northwest end of Rainbow Ridge. It is in the SW1/4NW1/4 section 29, T. 18 S., R. 11 E., Fairbanks Meridian. The occurrence is locality 4 of Hanson (1963), locality 19 of Cobb (1979 [OFR 79-238]), and locality S106 in table 2 of Nokelberg and others (1991).
Geology: At this locality, small quartz veins containing pyrite, chalcopyrite, and galena are stained with malachite and azurite (Hanson, 1963). The veins vary in attitude and cut sedimentary, volcanic, and dacite intrusive rocks of the Slana Spur Formation of Pennsylvanian age (Nokleberg and others, 1991). Sulfide minerals are also disseminated in metatuff near a dacite intrusion (Nokleberg and others, 1991). Selected samples assayed 9.9 to 10.0 percent copper, 0.4 to 0.5 percent lead, and traces of gold and silver (Hanson, 1963). Grab samples collected by the U.S. Geological Survey assayed 10 percent copper, 0.5 percent lead, and a trace of gold (Nokleberg and others, 1991).
Workings: Selected samples assayed 9.9 to 10.0 percent copper, 0.4 to 0.5 percent lead, and traces of gold and silver (Hanson, 1963). Grab samples collected by the U.S. Geological Survey assayed 10 percent copper, 0.5 percent lead, and a trace of gold (Nokleberg and others, 1991). The occurrence is on active claims of Northeast Exploration.
Age: Permian (?) or younger.
Alteration: Oxidation of copper minerals.
Commodities (Major) - Cu, Pb; (Minor) - Au
Development Status: None
Deposit Model: Polymetallic veins; Porphyry Cu (Cox and Singer, 1986; model 22c, model 17).
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:
ⓘ Azurite Formula: Cu3(CO3)2(OH)2 |
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Galena Formula: PbS |
ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
ⓘ Pyrite Formula: FeS2 |
ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
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 |
O | ⓘ Quartz | SiO2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Galena | PbS |
S | ⓘ Pyrite | FeS2 |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrite | FeS2 |
Cu | Copper | |
Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Pb | Lead | |
Pb | ⓘ Galena | PbS |
Other Databases
Link to USGS - Alaska: | MH219 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wrangellia DomainDomain
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