Muddy Creek West

Prospect, Active

Commodities and mineralogy

Main commodities Ag; Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale TY
Quadrangle map, 1:63,360-scale D-8
Latitude 61.8521
Longitude -152.8623
Nearby scientific data Find additional scientific data near this location
Location and accuracy The center of the Muddy Creek West prospect is about 1.8 miles east of Mount Estelle and about 0.4 mile west of the center of section 2, T. 20 N., R. 20 W. The location is accurate.

Geologic setting

Geologic description

The date of the discovery of the Muddy Creek West prospect is uncertain; it probably was sometime between 1986 to 1989 when Cominco Alaska worked in the area (Wahl and others, 2008). Kennecott Exploration Company was active from 2004 to 2006 and staked a large block of claims that covered the Muddy Creek West prospect. Geoinformatics Exploration Inc. acquired the property from Kennecott in 2007, and in 2009, Kiska Metals Corporation was formed by a merger of Geoinformatics and Rimfire Minerals Corporation. In early 2010, Kiska Metals (2010a) was actively exploring their claim block as part of their Whistler project.
The Muddy Creek West prospect covers a north-northwest trending area about 1 kilometer by 4 kilometers in size (Kiska Metals Corporation, 2010b). Numerous rock samples were collected at the prospect. A high percentage of them contained more than 1 gram of gold per tonne, 10 contained more than 5 grams of gold per tonne, and the best sample contained 56.60 grams of gold per tonne. There is little information on the prospect other than that it and the other prospects in the Muddy Creek area have 'high-grade gold-silver and base metals' and that the host rocks in the area are monzonite, monzonite porphyry, and biotite monzonite. These are probably part of the Mount Estelle pluton to the east (Wilson and others, 2009) that Reed and Lanphere (1972) dated at 65 to 66 Ma. See ARDF record TY019 for a general description of the mineralization associated with the Mount Estelle pluton.
Geologic map unit (-152.864523597138, 61.8515058479776)
Mineral deposit model '... high-grade gold-silver and base metals...' mineralization.
Age of mineralization Probably coeval with or younger than the 65 to 66 Ma Mount Estelle pluton.
Alteration of deposit Not mentioned.

Production and reserves

Workings or exploration Apparently only surface sampling.
Indication of production None
Reserve estimates None.
Production notes None.



Kiska Metals Corporation, 2010a, Whistler project overview; (as of February 26, 2010).
Kiska Metals Corporation, 2010b, Geoinformatics portfolio - Muddy Creek, Alaska: (as of February 27, 2010)
Wahl, George, Coutture, Jean-Francois, and Keller, GD., 2008, Mineral resource estimation, Whistler copper-gold project, Alaska Range, Alaska: Technical report for Geoinformatics Exploration, Inc., 124 p. (posted on, February 22, 2008).
Reporters D.J. Grybeck (Contractor, U.S. Geological Survey)
Last report date 4/2/2010