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dc.contributor.authorKosatka, Raymond F.
dc.coverage.spatialColorado Plateau
dc.coverage.spatialApache County (Ariz.)
dc.date1956-03-30
dc.date.accessioned2007-01-03T06:29:22Z
dc.date.available2007-01-03T06:29:22Z
dc.descriptionRME-199
dc.descriptionUnedited manuscript
dc.description.abstractThe U. S. Atomic Energy Commission carried on an exploration program of reconnaissance and drilling in the Lukachukai Mountains, Apache County, Arizona, from September 1950, until August 1955. Objectives of this program were fourfold: (1) to find mineable deposits of uranium ore (2) to develop sufficient reserves to justify construction of a processing mill at Shiprock, New Mexico, (3) to discover and develop ore-finding criteria, ore trends and favorable ground and (4) to evaluate the ore potential of the Lukachukai Mountains. Uranium ore was found within a 50-foot unit of the Salt Wash member of the Harrison formation, approximately 45 feet above the Salt Wash-Bluff contact. Radioactivity of the ore deposits in the Lukachukai Mountains is in equilibrium and the ore minerals are secondary in origin, principally carnotite and tyuyamunite. Ore bearing sandstones commonly lie between impervious mudstones and have finely disseminated organic matter, calcium carbonate, and iron and manganese oxides associated with the ore. Most ore bodies are in clusters elongated parallel to direction of ancient stream flow, and most uranium is confined to the more permeable portions of sandstone lenses filling scours in Salt Wash stream channels. Tectonic structure has not apparently influenced local deposition of uranium. A total of 374,198 feet was drilled in 1,837 holes, 242 of which were in ore and 469 mineralized.
dc.description.sponsorshipContract nos. AT(30-1) 1021, 1139, 1263, 1364; AT(05-1) 234, 257
dc.identifier.urihttp://hdl.handle.net/11166/83587
dc.languageEnglish
dc.publisherColorado Mesa University. Tomlinson Library
dc.publisher.originalU.S. Atomic Energy Commission
dc.relation.ispartofRME; 199
dc.rightsAll written materials, drawings, maps, photographs and other graphics are property of the contributor.
dc.subjectRadioactivity -- Archives -- Reports
dc.subjectUranium deposits
dc.subject.lcshRadioactivity
dc.titleSummary of uranium exploration in the Lukachukai Mountains, Apache County, Arizona, 1950 to 1955
dc.typeText
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