Unnamed Prospect (ARDF - BN130; near upper Niukluk River), Council Mining District, Nome Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - BN130; near upper Niukluk River) | - not defined - |
| Council Mining District | Mining District |
| Nome Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 11' 56'' North , 163° 51' 57'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Mindat Locality ID:
202100
Long-form identifier:
mindat:1:2:202100:6
GUID (UUID V4):
d189807d-654b-4787-b25d-f71f2cf816a0
Location: This prospect is on a ridge crest along the south side of an unnamed east headwater tributary of Niukluk River. It is about 2,000 feet south of the creek at an elevation of approximately 2,000 feet. It is 4,500 feet northwest of the skarn propect at BN110. This is locality 83 of Gamble (1988).
Geology: Highly oxidized, locally brecciated pyrite-chalcopyrite-galena-bearing drusy comb-quartz veins in high grade metamorphic rocks are present here. Secondary minerals include limonite, azurite, cerussite, chrysocolla, and malachite. Grab samples contain up to greater than 2 % Pb, greater than 2% Cu, 8,200 ppm Zn, 300 ppm Ag, 460 ppm Sb, 1,000 ppm As, 190 ppm Cd, 70 ppm Sn, and 14 ppm Bi (Gamble, 1988). The mineralized rocks occur as float and on dumps of shallow prospect pits or short adits. This locality, and several others in this part of the Bendeleben A-4 quadrangle, are in high grade metamorphic rocks that are structurally above or peripheral to the crosscutting Pargon pluton. The Pargon pluton is mostly granodiorite and assumed to be Cretaceous in age (Till and others, 1986). It was emplaced at shallower depths than the more deep-seated Bendeleben pluton to the east. The metamorphic rocks peripheral to the western Pargon pluton are also intruded by small, felsic dikes and plugs including quartz porphyry and muscovite granite.
Workings: Some shallow prospecting pits or short adit(s) are present here.
Age: Cretaceous; this occurrence is probably related to emplacement of the Pargon pluton which is assumed to be Cretaceous in age.
Alteration: Abundant secondary minerals are developed from the oxidation of sulfides.
Commodities (Major) - Ag, Cu, Pb, Zn
Development Status: None
Deposit Model: Polymetallic vein in high-grade metamorphic rocks (Cox and Singer, 1986; model
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
7 valid minerals.
Detailed Mineral List:
| β Azurite Formula: Cu3(CO3)2(OH)2 |
| β Chalcopyrite Formula: CuFeS2 |
| β Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| β Galena Formula: PbS |
| β 'Limonite' |
| β Malachite Formula: Cu2(CO3)(OH)2 |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Galena | 2.CD.10 | PbS |
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| β | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1 |
| Unclassified | |||
| β | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Azurite | Cu3(CO3)2(OH)2 |
| H | β Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | β Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | β Azurite | Cu3(CO3)2(OH)2 |
| C | β Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | β Azurite | Cu3(CO3)2(OH)2 |
| O | β Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | β Malachite | Cu2(CO3)(OH)2 |
| O | β Quartz | SiO2 |
| Al | Aluminium | |
| Al | β Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | β Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| S | β Galena | PbS |
| S | β Pyrite | FeS2 |
| Fe | Iron | |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrite | FeS2 |
| Cu | Copper | |
| Cu | β Azurite | Cu3(CO3)2(OH)2 |
| Cu | β Chalcopyrite | CuFeS2 |
| Cu | β Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | β Malachite | Cu2(CO3)(OH)2 |
| Pb | Lead | |
| Pb | β Galena | PbS |
Other Databases
| Link to USGS - Alaska: | BN130 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Brooks-Seward DomainDomain
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References
