Stiles

The Stiles is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Stiles
Secondary: Styles
Secondary: Shough

Commodity

Primary: Gold
Secondary: Lead
Secondary: Copper

Location

State: Alaska
District: Willow Creek

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Low-sulfide Au-quartz vein

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Wall-rock alteration within a few inches of the veins is intense, but seldom extends more than 10 to 12 inches beyond the quartz filling. Sericitization and carbonate alteration predominate, but there is some pyritization and in the outer parts of the alteration zone chloritization is present (Ray, 1954). Aplite dike shows evidence of hydrothermal alteration. Oxidation of Fe and Cu minerals.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Azurite
Ore: Chalcocite
Ore: Galena
Ore: Gold
Gangue: Quartz

Comments

Comment (Geology): Age = Late Cretaceous or younger; veins cut the Late Cretaceous Willow Creek Pluton.

Comment (Commodity): Ore Material = iron oxides

Comment (Commodity): Ore Material = iron oxides

Comment (Workings): Workings / Exploration = Capps (1915; 1916) reported remarkably high assays, several thousand dollars a ton in gold. At least 420 ft of underground workings: 150 ft driven by 1916 along a vein with moderate amounts of gold, the objective being a fault zone exposed on the surface. In 1931 an was adit driven 270 ft, with the last 100 ft in the aplite dike, but no mention of whether vein was found (Ray, 1933).

Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)

Comment (Deposit): Other Comments = This prospect is referred to in some literature as Stiles, Styles, and/or Shough, but all appear to be the same prospect.

Comment (Production): Production Notes = No data on production.

Comment (Reference): Primary Reference = Capps, 1915

Comment (Geology): Geologic Description = Gold-bearing quartz veins cut Late Cretaceous tonalite of the Willow Creek Pluton and at least one vein was reported to parallel a large aplite dike. The veins strike E to N 13 E, and dip 62 W; are 1 to 3 ft thick; and carry azurite, galena, iron oxide, chalcocite (?), and little or no free gold. The property is east of a fault zone that may have been a conduit for mineralizing solutions (Capps, 1915). The aplite dike on the property is part of the largest and most persistent aplite in district which is supposedly traceable for 6 miles (Ray, 1933). Aplite dike shows evidence of hydrothermal alteration.? the Willow Creek Pluton is a zoned pluton: the outer part consists of hornblende quartz diorite and lesser hornblende tonalite; the core consists of hornblende-biotite granodiorite, and lesser hornblende-biotite quartz monzodiorite and biotite quartz monzonite. Wall-rock alteration within a few inches of the veins is intense, but seldom extends more than 10 to 12 inches beyond the quartz filling. Sericitization and carbonate alteration predominate, but there is some pyritization and in the outer parts of the alteration zone chloritization is present (Ray, 1954).

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Capps, S.R., 1916, Gold mining in the Willow Creek district: U.S. Geological Survey Bulletin 642-E, p. 147-200.

Reference (Deposit): Capps, S.R., 1916, Gold mining in the Willow Creek district: U.S. Geological Survey Bulletin 642-G, p. 147-194, 195-200.

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.

Reference (Deposit): Brooks, A.H., 1913, Mineral resources of Alaska, report on progress of investigations in 1912: U.S. Geological Survey Bulletin 542, 308 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000.

Reference (Deposit): Ray, J.C., 1933, The Willow Creek gold-lode district, Alaska: U.S. Geological Survey Bulletin 849-C, p. 165-229.

Reference (Deposit): Capps, S.R., 1915, The Willow Creek District, Alaska: U.S. Geological Survey Bulletin 607, 86 p.

Reference (Deposit): Capps, S.R., 1914, Gold lodes and placers of the Willow Creek district: U.S. Geological Survey Bulletin 592, p. 245-272.

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