|Quadrangle map, 1:250,000-scale||VA|
|Quadrangle map, 1:63,360-scale||A-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is apparently on an unnamed south tributary to the lower Lowe River. The mouth of this tributary is 3.3 miles upstream from Canyon Slough. Cobb and Matson (1972, locality 79) call this occurrence 'Sulphide Gulch' , but USGS topographic maps show Sulphide Gulch about a mile west of Canyon Slough. The location shown by Cobb and Matson (1972, locality 79) is used here; it is at the center of section 11, T. 10 S., R. 5 W., of the Copper River Meridian. The accuracy of this location is uncertain.|
Geologic descriptionHeavy mineral concentrate from stream gravels at this occurrence contained gold, scheelite, chalcopyrite, pyrite, limonite, pyroxene, garnet, and zircon (Rose, 1965). Bedrock in the area is greenschist-facies metaflysch of the Late Cretaceous Valdez Group (Winkler and others, 1981 [OFR 80-892-A]). Gold-bearing quartz veins are widespread through the Valdez Group in the southern Valdez quadrangle (Cobb and Matson, 1972). Two massive sulfide prospects in mafic metavolcanic rocks of the Valdez Group (VA134 and VA143) are located upstream from this occurrence (Winkler and others, 1981 [OFR 80-892-B]).
|Geologic map unit||(-146.064417276283, 61.0164825344688)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene.|
|Workings or exploration||Only reconnaissance sampling has been done.|
|Indication of production||None|
|MRDS Number||A011527; D002744|
Cobb, E.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Valdez quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-438, 1 sheet, scale 1:250,000.
Rose, A.W., 1965, Geology and mineralization of the Midas mine and Sulphide Gulch areas near Valdez, Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 15, 21 p.
Winkler, G.R., Miller, R.J., MacKevett, E.M., Jr., and Holloway, C.D., 1981, Map and summary table describing mineral deposits in the Valdez quadrangle, southern Alaska: U.S. Geological Survey Open-File Report 80-892-B, 2 sheets, scale l:250,000.
|Reporters||Travis L. Hudson|
|Last report date||12/14/2001|