Unnamed Prospect (ARDF - TK136; in Horn Mountains southwest of Cameron Pass), Nelchina Mining District, Matanuska-Susitna Borough, Alaska, USAi
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Latitude & Longitude (WGS84):
62° 1' 27'' North , 147° 21' 14'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Glacier View | 234 (2017) | 28.7km |
Mindat Locality ID:
202475
Long-form identifier:
mindat:1:2:202475:5
GUID (UUID V4):
bfa63687-21d3-4e74-aa29-379a24ecaa16
Location: This site is a 7-mile-long belt that extends southwest from the head of North Creek, into the Anchorage quadrangle. The coordinates are at about the center of this belt which is near the center of sec. 1, T. 22 N., R. 11 E., Seward Meridian. The location is accurate. This is locality 112 of Csejtey and Miller (1978).
Geology: This deposit is a 7-mile-long belt that consists of zeolite minerals in the Lower Jurassic, Talkeetna Formation (Csejtey and others, 1978). The deposit consists of flat-lying, normally graded, zeolitized tuff beds interlayered with lava flows. The zeolite minerals are analcime, heulandite, laumontite, and mordenite; they are accompanied by calcite, feldspar, montmorillonite, and quartz. The mordenite content ranges from 26 to 72 percent, and averages 49 percent (Hawkins, 1976). According to Hawkins, this deposit is of economic size and grade and warrants development.
Workings: Only surface examination.
Age: Jurassic.
Alteration: Zeolitization of tuff beds.
Commodities (Major) - Zeolites
Development Status: None
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
5 valid minerals.
Detailed Mineral List:
| ⓘ Analcime Formula: Na(AlSi2O6) · H2O |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Feldspar Group' |
| ⓘ 'Heulandite Subgroup' Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| ⓘ Montmorillonite Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ Mordenite Formula: (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| ⓘ Quartz Formula: SiO2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Montmorillonite | 9.EC.40 | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ | Analcime | 9.GB.05 | Na(AlSi2O6) · H2O |
| ⓘ | Mordenite | 9.GD.35 | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| Unclassified | |||
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Heulandite Subgroup' | - | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Analcime | Na(AlSi2O6) · H2O |
| H | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| H | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| H | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Analcime | Na(AlSi2O6) · H2O |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| O | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| O | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| O | ⓘ Quartz | SiO2 |
| Na | Sodium | |
| Na | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Na | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| Na | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| Na | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Mg | Magnesium | |
| Mg | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Al | Aluminium | |
| Al | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Al | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| Al | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| Al | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Si | Silicon | |
| Si | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Si | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| Si | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| Si | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Si | ⓘ Quartz | SiO2 |
| K | Potassium | |
| K | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| K | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O |
| Ca | ⓘ Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| Ca | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Other Databases
| Link to USGS - Alaska: | TK136 |
|---|
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References
