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Mystery Prospect, Kantishna Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Mystery Prospect | Prospect |
| Kantishna Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 34' 32'' North , 150° 43' 19'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The prospect is in Denali National Park and Preserve.
Location: The Mystery prospect (Cobb, 1980 [OFR 80-363]) is at an elevation of about 3950 feet on the ridge at the head of Spruce Creek. It is in the NW1/4 NE1/4 section 31, T. 15 S., R. 16 W., Fairbanks Meridian. The location probably is accurate within 1/2 mile. There are several prospects at the head of Spruce Creek, and the exact site of the Mystery prospect is uncertain. The location for this record is based in part on the Alaska State Kardex file (KX 66-23: Heiner and Porter, 1972; Hawley and Associates, 1978). The Mystery prospect is included with other nearby prospects, including the Lena and Silver Wires (MM061), in location 22 of Cobb (1972 [MF 366]).
Geology: The country rocks in the area of the Mystery prospect are graphitic phyllite and marble of the lower Paleozoic Spruce Creek sequence (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The deposit consists of a 2.5-foot-thick quartz vein that contains galena, stibnite, and a secondary copper mineral, probably malachite (Davis, 1923, p. 132). No other information about the deposit has been published and it has not been found, with certainty, by any of the more recent surveys of the area.
Workings: Probably explored by shallow pits, since sloughed. The prospect was last active in 1922 (Heiner and Porter, 1972).
Age: The deposit is assumed to be Eocene (see record MM091).
Alteration: Oxidation of copper mineral.
Commodities (Major) - Pb, Sb; (Minor) - 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:
| ⓘ Galena Formula: PbS |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Stibnite Formula: Sb2S3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | 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 | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Stibnite | Sb2S3 |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Sb | Antimony | |
| Sb | ⓘ Stibnite | Sb2S3 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | MM063 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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