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    Geochemical databases for characterization of K-metasomatized Tertiary units in central-western Arizona

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    Author
    Caudill, C.M.
    Issue Date
    2015-12-09
    Keywords
    Arizona Geological Survey Digital Information
    Tertiary
    western Arizona
    Whipple Mountains
    Basin and Range Province
    Plomosa Mountains
    Maricopa County
    Harcuvar Mountains
    Buckskin Mountains
    Rawhide Mountains
    Artillery Mountains
    mineralization
    iron oxide
    manganese
    K-feldspar
    sedimentary rocks
    geochemistry
    mineral exploration
    X-ray fluorescence
    K-metasomatized
    metamorphism
    alteration
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    Citation
    Caudill, C.M., 2015, Geochemical databases for characterization of K-metasomatized Tertiary units in central-western Arizona. Arizona Geological Survey Digital Information DI-45, 6 p., Shapefiles, Excel spreadsheets.
    Description
    Tertiary sedimentary units in central-western Arizona are of interest because they evince evidence of potassium alteration and because they host Mn, Fe, and Cu mineral deposits. Little work has been done to characterize these units geochemically. Mineralization typically occurs as replacement ores and as disseminated to massive tabular ores (particularly the manganese deposits), and as fracture and fault filling deposits (Spencer and Welty, 1986). Mining districts in this province have produced copper, manganese, iron, and gold as well as lead, zinc, and silver accompanied by common gangue minerals, including: quartz, calcite, chlorite, and barite. Manganese production in the Buckskin-Rawhide Mountain area totaled approximately 24 million pounds of Mn; the Artillery Mountains district yielded more than 93 million pounds making it the largest manganese producer in the United States (Spencer and Welty, 1986). Associations between K-metasomatism and detachment-related mineralization have been suggested in the southwestern United States (Chapin and Glazner, 1983; Brooks, 1986; Chapin and Lindley, 1986). Alteration due to infiltration K-metasomatism, often associated with hematization, was the dominant process responsible for mineralization in the Tertiary strata. Similar alteration assemblages indicating K-metasomatism (secondary K-feldspar-quartz-calcite and hematite) have been previously mapped in central-western Arizona south to Picacho Peak (Brooks, 1986), north to the Artillery Mountains, and west to the Whipple Mountains, spanning over 40,000km2.
    URI
    http://hdl.handle.net/10150/630072
    Additional Links
    http://repository.azgs.az.gov/uri_gin/azgs/dlio/1662
    Language
    en
    Series/Report no.
    DI-45
    Rights
    Arizona Geological Survey. All rights reserved.
    Collection Information
    Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
    North Bounding Coordinate
    34.25
    South Bounding Coordinate
    33.15
    West Bounding Coordinate
    -114
    East Bounding Coordinate
    -113
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    AZGS Document Repository

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