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Oxidized Zinc Deposits of the United States: Part 3. Colorado

Description: From abstract: Deposits of oxidized zinc ore are widely distributed in the western part of Colorado in the Rocky Mountains west of the Front Range and in the uplifted plateaus that border the main area of the Colorado Plateau. The principal production and reserves are restricted to several mining districts--Leadville. Aspen, Monarch, Spring Creek. Horseshoe, Tomichi, Tincup, and Rico--in all of which limestone and dolomites of Paleozoic age are the main host rocks. One deposit, that of the Seda… more
Date: 1964
Creator: Heyl, Allen V.
Partner: UNT Libraries Government Documents Department
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Geology of Franklin, Webster, and Nuckolls Counties, Nebraska

Description: The following report was prepared as part of a program of the Department of the Interior for the development of the Missouri River basin. The report focuses on the study of the geology of part of south-central Nebraska, with emphasis on the deposits of the Pleistocene age and their engineering characteristics.
Date: 1964
Creator: Miller, Robert D.; Van Horn, Richard; Dobrovolny, Ernest & Buck, Laurence P.
Partner: UNT Libraries Government Documents Department
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Hawaiian Volcanoes During 1955

Description: From introduction: "This report continues the systematic account of conditions at Hawaiian volcanoes begun in earlier reports of this series."
Date: 1964
Creator: Macdonald, Gordon A. & Eaton, Jerry P.
Partner: UNT Libraries Government Documents Department
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Nonopaque Heavy Minerals in Sandstone of Jurassic and Cretaceous Age in the Black Hills, Wyoming and South Dakota

Description: The following report describes the examinations of the nonopague heavy minerals in sandstone found in the Black Hills in northeastern Wyoming and western South Dakota. The studies were made to determine if differences in the shapes of the grains and proportions of minerals are sufficiently distinctive to be used in subdividing and correlating formations.
Date: 1964
Creator: Mapel, W. J.; Chisholm, Wayne A. & Bergenback, Richard Edwards
Partner: UNT Libraries Government Documents Department
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