Unnamed Prospect (ARDF - HE155; west of upper Butte Creek), Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - HE155; west of upper Butte Creek) | - not defined - |
| Valdez Creek Mining District | Mining District |
| Matanuska-Susitna Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 9' 0'' North , 148° 2' 24'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Mindat Locality ID:
202175
Long-form identifier:
mindat:1:2:202175:4
GUID (UUID V4):
736cc592-9a81-4a7b-b5af-480ade352f3e
Drill core, logs, and assays from this prospect are available at the Alaska Materials Center.
Location: This prospect is at an elevation of about 4,200 feet, near the head of an unnamed, southeast-flowing tributary to upper Battle Creek. The map site is just north of the center of sec. 25, T. 20 S., R. 3 W., of the Fairbanks Meridian. The location is accurate to within one mile.
Geology: The country rock at this prospect is Jurassic or Cretaceous metagraywacke and argilite. The deposit consists of quartz-chlorite-sericite veins that contain arsenopyrite and pyrite. Samples of the vein assay 10 to 100 ppb gold (Anonymous, 1997).
Workings: Seven drill holes were completed at the prospect in 1991 (Anonymous, 1997).
Age: Jurassic or younger.
Alteration: Phyllic.
Commodities (Major) - Au
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
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:
| β Arsenopyrite Formula: FeAsS |
| β 'Chlorite Group' |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(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 | Pyrite | 2.EB.05a | FeS2 |
| β | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| β | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | β Quartz | SiO2 |
| O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | β Quartz | SiO2 |
| Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | β Arsenopyrite | FeAsS |
| S | β Pyrite | FeS2 |
| K | Potassium | |
| K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | β Arsenopyrite | FeAsS |
| Fe | β Pyrite | FeS2 |
| As | Arsenic | |
| As | β Arsenopyrite | FeAsS |
Other Databases
| Link to USGS - Alaska: | HE155 |
|---|
Other Regions, Features and Areas containing this locality
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References
