|Quadrangle map, 1:250,000-scale||HW|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This unnamed occurrence is in one of the small tributaries at the head of Memorial Creek, about a mile south of peak 1305 (in meters). It is about 0.5 mile east of the center of section 15, T. 34 N., R. 6 E.|
Geologic descriptionThe rocks in the area are interbedded sandstone, siltstone, and shale of the Upper Devonian or Lower Mississippian, Kanayut Conglomerate (Kurtak and others, 1995). In following up a geochemical anomaly, samples were collected from rubblecrop of red-brown siltstone; they contained 9,423 parts per million (ppm) zinc, 1,122 ppm barium, and more than 2,000 ppm strontium. No sulfides were identified but the high zinc content indicates fine-grained sphalerite. Not enough work was done to determine the extent of the mineralization.
|Geologic map unit||(-157.446839599314, 68.3444779223656)|
|Mineral deposit model||Zinc sandstone deposit?|
|Age of mineralization||Possibly Devonian or Mississippian based on the age of the host rock and by analogy to other zinc deposits in the western Brooks Range.|
|Alteration of deposit||Not noted.|
|Workings or exploration||Only sampling and mapping by the U.S. Bureau of Mines is documented.|
|Indication of production||None|
Additional commentsMAS number 0020200016.
|Reporters||D.J. Grybeck (Contractor, U.S. Geological Survey)|
|Last report date||4/18/2010|