Unnamed (head of Montana Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Hg
Gangue minerals carbonate minerals; quartz

Geographic location

Quadrangle map, 1:250,000-scale ID
Quadrangle map, 1:63,360-scale C-3
Latitude 62.56225
Longitude -157.37198
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,100 feet, about 1.5 mile north-northwest of Camelback Mountain. It is about 0.3 mile east-northeast of the center of section 32, T. 29 N., R. 44 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence is an altered zone in sandstone and shale of the Upper Cretaceous Kuskokwim Group adjacent to a mafic dike that has been altered to silica and carbonate minerals (Bundtzen, Laird, and Lockwood, 1988; Miller and Bundtzen, 1994; Bundtzen and Miller, 1997). One sample of altered mafic dike contained 2,900 parts per billion mercury (McGimsey and others, 1988; Miller, Bundtzen, and Gray, 2005).
Geologic map unit (-157.37434834786, 62.5615670949808)
Alteration of deposit Silica-carbonate alteration of dike.

Production and reserves

Workings or exploration The site was sampled by the Alaska Division of Geological and Geophysical Surveys in 1983 (McGimsey and others, 1988; Miller, Bundtzen, and Gray, 2005).
Indication of production None