|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||These occurrences are in a saddle about 3.3 miles south of the mouth of Friendly Creek on the Ipnavik River. They are near the center of section 9, T. 34 N., R. 7E. The location is accurate.|
Geologic descriptionThe rocks in the area consist of undivided, Upper Devonian to Lower Mississippian, Kanayut Conglomerate and Noatak Sandstone, and mafic igneous rocks. Kurtak and others (1995) describe scattered occurrences of disseminated sphalerite with minor galena and pyrite, along a west-northwest, 1000-meter-long trend through a saddle. The sulfides are in a gossanous silicified sandstone that locally contains boxworks structures with sphalerite. Samples contained up to 3.4 percent zinc and 1,920 parts per million lead.
|Geologic map unit||(-157.274709174039, 68.3565823885472)|
|Mineral deposit model||Sandstone lead-zinc deposit?|
|Age of mineralization||Late Devonian to Early Mississippian or younger based on the age of the host rocks.|
|Workings or exploration||Only limited sampling by U.S. Bureau of Mines.|
|Indication of production||None|
Additional commentsMAS number 0020200010.
|Reporters||D.J. Grybeck (Contractor, U.S. Geological Survey)|
|Last report date||4/18/2010|