|Quadrangle map, 1:250,000-scale||SD|
|Quadrangle map, 1:63,360-scale||C-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is about 1.1 mile north-northeast of the north end of Taylor Lake. It is about 0.2 mile northwest of the center of section 16, T. 49 S., R. 75 E.|
Geologic descriptionA 2- to 3-foot-thick quartz vein is exposed on a cliff on the bank of a stream. The vein appears to crosscut the foliation of the graphitic schist host rock (Kimble and others, 1984). A representative sample of the vein contained 15 ppm silver, 0.15 ppm gold, 1,300 ppm lead, and 250 ppm zinc. The host rocks are part of the Cretaceous hornblende schist unit of Brew and Grybeck (1984).
|Geologic map unit||(-133.394999743954, 57.6225300374314)|
|Mineral deposit model||Low-sulfide, gold-quartz vein (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Cretaceous or younger based on the age of the host rock.|
|Workings or exploration||No work other than sampling by government geologists.|
|Indication of production||None|
Additional commentsThe occurrence is in the Chuck River Wilderness Area which is closed to mineral exploration and mining.
Brew, D.A., and Grybeck, Donald, 1984, Geology of the Tracy Arm-Fords Terror wilderness study area and vicinity, Alaska, in U.S. Geological Survey and U.S. Bureau of Mines, Mineral resources of the Tracy Arm-Fords Terror wilderness study area and vicinity, Alaska: U.S. Geological Survey Bulletin, 1525, p. 19-52.
Kimble, A.L., Still, J.C., and Rataj, J.L., 1984, Mineral deposits and occurrences in the Tracy Arm-Fords Terror wilderness study area and vicinity, Alaska, in U.S. Geological Survey and U.S. Bureau of Mines, Mineral resources of the Tracy Arm-Fords Terror wilderness study area and vicinity, Alaska: U.S. Geological Survey Bulletin 1525, p. 105-210.
|Reporters||Donald Grybeck (U.S. Geological Survey)|
|Last report date||10/8/2004|