|Quadrangle map, 1:250,000-scale||SD|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is in the saddle between peaks 5919 and 5765, about 5.2 miles east of the east end of Glory Lake. It is 0.3 mile southwest of the center of section 28, T. 52 S., R. 79 E.|
Geologic descriptionThis occurrence consists of bornite that occurs in an aplite dike, in a quartz vein, in a pegmatite dike, and along an epidotized fracture in hornblende-biotite quartz diorite (Clark and others, 1970 [OF 70-73]). The area is largely unmapped but the age of the rocks is probably Tertiary or Cretaceous (Gehrels and Berg, 1992). Samples contained up to 7,000 parts per million (ppm) copper and 30 ppm silver.
|Geologic map unit||(-132.756859131491, 57.3280452130078)|
|Mineral deposit model||Bornite disseminated in plutonic rocks and along fractures.|
|Age of mineralization||Younger than what are probably Tertiary or Cretaceous plutonic rocks.|
|Alteration of deposit||Bornite in thin quartz veins and along epidotized fractures.|
|Workings or exploration||Only surface sampling by government geologists.|
|Indication of production||None|
Clark, A.L., Brew, D.A., Grybeck, D.J., and Wehr, Raymond, 1970, Analyses of rock and stream-sediment samples from the Sumdum B-3 quadrangle, Alaska: U.S. Geological Survey Open-File Report 70-73, 95 p., 1 sheet, scale 1:63,360.
|Reporters||Donald Grybeck (U.S. Geological Survey)|
|Last report date||10/8/2004|