|Quadrangle map, 1:250,000-scale||DE|
|Quadrangle map, 1:63,360-scale||D-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of about 1,000 feet on the northeast side of what is locally called Dova Mountain (hill 1185), on the north end of Long Island. The occurrence is in the NW1/4 section 27, T. 80 S., R. 84 E.|
Geologic descriptionThe rocks near this occurrence consist of dacitic metavolcanic rocks, marble, and phyllite of the pre-Middle Ordovician Wales Group (Gehrels, 1991). In 1988, Hedderly-Smith (1999) collected a rock chip sample from an orange-weathering, iron-stained zone in calcareous, gray mica schist that contains unidentified disseminated sulfides. The sample contained 1,412 parts per million (ppm) copper, 5,370 ppm lead, 5,100 ppm zinc, 4.62 ounces of silver per ton, and 163 parts per billion gold. The zone was resampled in 1990 but the sample did not contain any anomalous metals.
|Geologic map unit||(-132.745560834347, 54.9047538018906)|
|Age of mineralization||In pre-Ordovician rocks.|
|Alteration of deposit||The rocks are oxidized and iron stained.|
|Workings or exploration||Only surface sampling.|
|Indication of production||None|
Additional commentsThe subsurface rights to the land in the vicinity are held by Sealaska Corporation.
Gehrels, G. E., 1991, Geologic map of Long Island and southern and central Dall Island, southeastern Alaska: U.S. Geological Survey Map MF-2146, 1 sheet, scale 1:63,360.
Hedderly-Smith, D.A., 1999, Inventory of metallic mineral prospects, showings and anomalies on Sealaska lands, 1988 through 1998: Sealaska Corporation, Juneau, Alaska, 217 p. (internal report held by Sealaska Corporation, Juneau, Alaska).
|Reporters||D.J. Grybeck (Applied Geology)|
|Last report date||9/1/2003|