|Quadrangle map, 1:250,000-scale||MF|
|Quadrangle map, 1:63,360-scale||D-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The occurrence is at about 2500 feet elevation near or on the ridge between Rendu Inlet and Tarr Inlet about 4.2 miles southeast of Mt. Abdallah. Precision of location is poor; it is probably accurate within 0.5 mile. The occurrence is number 60 of MacKevett and others (1971) and number 42 of Kimball and others (1978).|
Geologic descriptionThe area is mainly underlain by foliated granitic rock of Cretaceous age, subordinate marble of Paleozoic age and possibly argillic metasedimentary rocks of Devonian and Silurian age (Brew and others, 1978, pl. IA). Molybdenite, chalcopyrite, pyrite and pyrrhotite occur in quartz veins, less than 3 inches thick, at a spacing of several feet. Veins also occur in quartz-rich pegmatitic dikes in a 25-foot thick zone in granitic rocks. The veins and dikes have variable strikes, but most strike northward and dip to the east (MacKevett and others, 1971, p. 79; also table 9). No analyses were reported by either MacKevett and others or by Kimball and others, 1978).
|Geologic map unit||(-136.691870537155, 58.939605549968)|
|Mineral deposit model||Copper-molybdenum stockwork mineralization. Porphyry Cu and porphyry Mo (Cox and Singer, 1986; model 17 and 21b).|
|Mineral deposit model number||17 and 21b|
|Age of mineralization||Probably Cretaceous.|
|Workings or exploration||Surface exposure, no workings. No analyses reported.|
|Indication of production||None|
Additional commentsIsolated occurrence of molybdenum and copper minerals in Glacier Bay National Park and Preserve.
Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p., 7 sheets.
Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
|Reporters||C.C. Hawley (Hawley Resource Group)|
|Last report date||4/9/1999|