Schiestler Peak molybdenum prospect

Site Name

Primary: Schiestler Peak molybdenum prospect
Secondary: Schiester Peak (note the misspelling)
Secondary: Schiestler Peak
Secondary: Temple Peak deposit
Secondary: Temple Pass
Secondary: Wind River
Secondary: Unknown
Secondary: Unidentified Occurrence

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Commodity

Primary: Molybdenum

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Location

State: Wyoming
County: Sublette

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Land Status

Land ownership: National Wilderness
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: USFS: Wilderness Area

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Holdings

Not available

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Workings

Type: Underground

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Ownership

Not available

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Production

Not available

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Deposit

Record Type: Deposit
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N

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Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains

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Mineral Deposit Model

Not available

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Orebody

Name: "Temple Peak Deposit" from former record 10080834 (W032211 = 0560350043)
Form: POD

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Structure

Type: L
Structure: intrusive dike

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Alterations

Alteration Type: L
Alteration: SILICIFICATION, SERICITIZATION, SAUSSURITIZATION

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Rocks

Name: Schist
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Age Old: Neoproterozoic

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Analytical Data

Analytical Data: see Benedict, 1982, UW MS thesis.
Analytical Data: see USGS OFR-82-299.

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Materials

Ore: Pyrite
Ore: Molybdenite
Ore: Chalcopyrite

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Comments

Comment (Geology): Orebody description from "Temple Peak Deposit" , former record 10080834 (W032211 = 0560350043) citing an unpublished report for the GSW, Nov. 30, 1955 (see references).

Comment (Deposit): "Significant molybdenum occurrences in the Wind River Mountains are limited to the area centered around Schiestler Peak. The ore mineral, molybdenite (MoS2), occurs in a variety of rock types within the porphyritic quartz monzonite, and is found predominantly within a 4 km (2.5 mi) radius of Schiestler Peak, becoming more concentrated on Schiestler Peak proper. Mineralization is a localized phenomenon associated with late stage crystallizations of the porpyritic quartz monzonite pluton which is concentrated near the pluton's margin. Mineralization is similar in nature to many Precambrian pegmatite-aplite-quartz vein molybdenite deposits found in Canada." (Benedict, 1982, p. 83)

Comment (Deposit): "The main mineralization is limited to two small pods on Schiestler Peak (plate 2). These zones have been explored, but little if any ore was removed from the sites. The upper zone is the richest and has large grains and rosettes of molybdenite scattered thorughout the locality. This zone appears to be situated in a aplite {...]" (Benedict, 1982, p. 83-84).

Comment (Location): This deposit seems to be exposed as 4 veins, one each in secs. 30 an 31 in 32N R103W and secs. 24 and 25 T32N, R104W. (Hausel, 1997, Bull. 70, p. 187, fig. 76). Location is for largest disturbance visible on Google Earth and measured by GPS by T.Klein, USGS.

Comment (Deposit): Deposit type: disseminated, veinlets. This is a Precambrian vein-type deposit. Do not confuse with typical porphyry-Mo deposits.

Comment (Deposit): SEVERAL MOLYBDENITE VEINS AND DISSEMINATED ASSOCIATED WITH WEAK ALTERATION NEAR PRECAMBRIAN PLUTON BOUNDARY. (In spite of the word "porphyry", this is NOT a porphyry-type deposit)

Comment (Geology): Host rock: Precambrian biotite-granite porphyry. Or Precambrian quartz monzonite. Or related rocks. (See geologic map by Benedict, 1982)

Comment (Location): Terry Klein, by GPS, places this prospect at the northwestern of 2 prospects at 11,200 ft. on the Temple Peak topo map on the SW flank of Schiestler Peak.

Comment (Location): Section, Township, and Range information unverified. Not surveyed or mapped on the topo. Used GIS overlay (see Wilson and others, 2001, USGS OFR-2001-497)

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References

Reference (Deposit): Hausel and Sutherland, 2000, WSGS Bull. 71, 268 p.
Pages: p. 182.

Reference (Deposit): Lee, G.K., 1982, Geologic reconnaissance and geochemical sampling survey of molybdenum mineralization near Schiestler Peak , Temple Peak quadrangle, Sublette County, Wyoming: USGS Open-File Report 82-299.

Reference (Deposit): Hausel, 1997, WGS Bull. 70, 229 p.
Pages: p. 186-187.

Reference (Deposit): KING, R.U., (UNPUB. DATA)

Reference (Deposit): Benedict, J.F., 1982, The geology and mineral potential of the Schiestler Peak area, Temple Peak Quadrangle, Wyoming: Univ. of Wyoming MS thesis, 119 p., 3 plates (1:24,000, 1:5,000, 1:24,000).

Reference (Location): Wilson and others, 2001, Databases and simplified geology for mineralized areas, claims, mines and prospects in Wyoming: USGS OFR 01-497 [http://pubs.usgs.gov/of/2001/ofr-01-0497/]
URL: http://pubs.usgs.gov/of/2001/ofr-01-0497/

Reference (Deposit): TEMPLE PEAK MOLYBDENUM DEPOSIT, SUBLETTE COUNTY, WYOMING: UNPUBLISHED REPORT FOR GSW, NOVEMBER 30, 1955.

Reference (Deposit): Osterwald and others, 1966, Mineral Resources of Wyoming: Geological Survey of Wyoming Bull. 50 [revised ed.], p. 136.

Reference (Deposit): OSTERWALD, F. AND OSTERWALD, D., 1952, WYOMING MINERAL RESOURCES: WYOMING GEOLOGICAL SURVEY BULL. 45, p. 112.

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