Unnamed (lode in Rocky Mountain Creek)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities W
Other commodities Au
Ore minerals gold; scheelite
Gangue minerals quartz; feldspar

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale D-1
Latitude 64.777
Longitude -165.1877
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is in Rocky Mountain Creek about 0.2 mile below the stibnite vein called the Lindfors prospect (NM080); it is at an elevation of about 550 feet. The location is shown on figure 4 of Coats (1944). The location is accurate within about 500 feet.

Geologic setting

Geologic description

Rocky Mountain Creek has been mined for gold, and concentrates contain scheelite (NM082). The creek was one of six creeks on the Seward Peninsula that have been identified as possibly containing important amounts of scheelite (Coats, 1944, p. 6). This prospect is on a linear feature mapped from aerial photographs by Hummel (1962 [MF 248]). The linear appears to closely coincide with the scheelite-bearing vein and scheelite-bearing float that was traced from Rocky Mountain Creek southerly for 4,000 feet to Nelson Gulch (Coats, 1944, figure 4). Bedrock in this area is a calcareous schist that gradationally overlies quartzite and schist (Hummel, 1962 [MF 248]).
Geologic map unit (-165.190319104643, 64.7762427286262)
Mineral deposit model Scheelite-bearing quartz-plagioclase veins in schist.

Production and reserves

Workings or exploration Explored by placer mining on Rocky Mountain Creek.
Indication of production None
Production notes Possibly some placer production of scheelite from Rocky Mountain Creek.

References