|Quadrangle map, 1:250,000-scale||JU|
|Quadrangle map, 1:63,360-scale||A-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of approximately 3,000 feet on the Mansfield Peninsula, 1/2 mile northwest of Snowy Mountain. It is just above the center of the boundary between section 29 and 30, T. 42 S., R. 65 E. of the Copper River Meridian. The location is accurate.|
Geologic descriptionWells and others (1986) describe this occurrence as disseminated pyrite, chalcopyrite, and galena in siderite-cemented quartz breccia. The rocks in the general area are mainly Ordovician and Devonian to Triassic, clastic units, mafic-intermediate volcanic rocks, and subordinate limestone. The bedded rocks are intruded and locally metamorphosed by Cretaceous granodiorite (Gehrels and Berg, 1994).
|Geologic map unit||(-134.834190932467, 58.2008638227432)|
|Workings or exploration||Probably explored in conjunction with exploration of the Alaska Dano mine (JU235).|
|Indication of production||None|
Additional commentsThe occurrence is on the southern portion of a large block of patented mining claims that cover the Alaska Dano and Nowell-Otterson properties (JU235, JU236).
Gehrels, G.E., and Berg, H.C., 1994, Geology of southeastern Alaska, in Plafker, George, and Berg, H. C., eds., The geology of Alaska: Geological Society of America, DNAG, The geology of North America, Vol. G-1, p. 451-467.
|Reporters||J.C. Barnett and L.D. Miller (Juneau, Alaska )|
|Last report date||12/15/2001|