993 resultados para Placer deposits
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"December 1950."
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"June 18, 1951 [Site Issuance Date]."
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"August 1, 1951 [Site Issuance Date]."
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"November 1951."
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"September, 1951."
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"September 11, 1951."
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"July 12, 1951, Site issuance date."
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Part of the Salt Wash sandstone outcrop on the southwest rim of the Lukachukai Mountains is strongly mineralized in cross-bedded, channel sandstone. The deposits are opposite the strongly mineralized belt on the northeast rim. A north to northeast ore trend is possibly related to the original Salt Wash stream system.
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Cover title.
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"July, 1956."
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"Division of Raw Materials."
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"March 1957."
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Mode of access: Internet.
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Includes bibliographical references.
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Mode of access: Internet.