Unnamed (northeast of Snow White Peak)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Pb; Sb; Zn
Other commodities Au
Ore minerals galena; sphalerite; stibnite
Gangue minerals chlorite; quartz; sericite

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale B-3
Latitude 63.3652
Longitude -145.3102
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 6,200 feet on the Johnson Glacier 2 miles east-northeast of Snow White Peak. It is in the SW1/4 section 8, T. 18 S., R. 13 E., Fairbanks Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence is generally described as lead-zinc-antimony veins in quartz sericite schist occurring along a 1,500-foot-long, northwest-trending, rubble train. Samples show erratic values: as much as 9.4 percent antimony, 1.25 percent arsenic, 0.3 percent zinc, 0.06 percent lead, and 0.035 ounce of gold per ton (R.A. Blakestad and others, unpublished Resource Associates of Alaska, Inc. report, 1976).
This unnamed occurrence is within the Jarvis Creek subterrane, which is Devonian and older. This terrane is chiefly composed of fine-grained, mylonitic metasedimentary rocks. The unit is about 65 percent quartz-mica schist, 15 percent quartzite, and 5 percent each of chlorite-white-mica schist, quartz-biotite schist, calcareous schist, and marble. Protoliths are mainly pelite, quartz sandstone, graywacke, marl, and limestone. Intense deformation and recrystallization have obliterated most relict minerals and textures. The unit is probably is a few thousand meters thick (Nokleberg and others, 1992).
Geologic map unit (-145.312442393672, 63.3647975646019)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Age of mineralization Devonian or younger, on the basis of the age of the host rock, which is in the Jarvis Creek Glacier subterrane (Nokleberg and others, 1992).

Production and reserves

Workings or exploration This occurrence was visited in 1976 by Resource Associates of Alaska, Inc. but there is no more recent report of work (Rodney A. Blakestad and others, unpublished Resource Associates of Alaska, Inc. report, 1976).
Indication of production None

Additional comments

Unpublished data cited is available for viewing by contacting Grayd Resources Inc. in Vancouver, B. C., Canada (www.grayd.com), or Northern Associates Inc. in Fairbanks, Alaska.

References