Unnamed (south tributary of Black Sand Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities Au; Zn
Ore minerals sulfides
Gangue minerals carbonate; quartz

Geographic location

Quadrangle map, 1:250,000-scale MZ
Quadrangle map, 1:63,360-scale A-4
Latitude 65.01
Longitude -154.8068
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is on the west valley wall of a north-flowing tributary of Black Sand Creek, about a mile from the south edge of the Melozitna A-4 quadrangle. It is at an elevation of about 1,300 feet, 0.5 mile east-northeast of the center of section 33, T. 5 S., R. 20 E., Kateel River Meridian.

Geologic setting

Geologic description

The rocks in the vicinity of this prospect consist of pre-Cretaceous, amphibolite-grade gneiss, dolomitic marble, quartzite, quartz schist, and granodiorite gneiss. These rocks are in thrust or low-angle fault contact with upper-plate, greenschist-grade, lower Mesozoic and upper Paleozoic, marine sedimentary rocks and basalt and mafic and ultramafic intrusive rocks (Patton and others, 1977; Dillon and others, 1983). Aplite, pegmatite, and leucocratic apophyses of Cretaceous granite crop out less than one mile west of the prospect (Dillon and others, 1983).
The country rock at the prospect is chiefly graphitic and chloritic pelitic schist (North Star Exploration, Inc., 1999 [DLR 99-33]). The mineralization is similar to that at the Zincabou prospect (MZ022). It includes zones of disseminated sulfides and quartz-carbonate veins that parallel schistosity. The deposit has been variously interpreted as a structurally-controlled epithermal veins, skarn, stockwork veins, or a massive-sulfide replacement deposit (North Star Exploration Inc., 1999 [DLR 99-33]).
There has been sporadic exploration of this prospect for about 30 years (North Star Exploration, Inc., 1999 [DLR 99-33]). WGM, Inc. explored it from 1975 to 1977 and in 1979; Central Alaska Gold Co. worked on the property from 1989 to 1990; and North Star Exploration, Inc. explored it in 1998.
Geologic map unit (-154.809305303916, 65.0094170135933)
Mineral deposit model Kipushi Cu-Pb-Zn (Cox and Singer, 1986; model 32c); Polymetallic veins (Cox and Singer, 1986; model 22c); Zn-Pb skarn (Cox and Singer, 1986; model 18c); Creede epithermal (Zn)-Au (Cox and Singer, 1986; model 25b)
Mineral deposit model number 18c, 22c, 25b, 32c

Production and reserves

Workings or exploration There has been sporadic exploration of this prospect for about 30 years (North Star Exploration, Inc., 1999 [DLR 99-33]). WGM, Inc. explored it from 1975 to 1977 and 1979; Central Alaska Gold Co. worked on the property from 1989 to 1990; and North Star Exploration, Inc. explored it in 1998.
Indication of production None

Additional comments

The prospect is on land selected by Doyon, Limited. For further information, contact Doyon, Limited, 1 Doyon Place, Suite 300, Fairbanks, Alaska 99701-2941.

References

References

Reporters G.E. Graham, D.J. Szumigala (Alaska Division of Geological and Geophysical Surveys)
Last report date 1/10/2005