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    Density, magnetic susceptibility, and the characterization of ordinary chondrite falls and showers

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    Author
    Consolmagno, G. J.
    Macke, R. J.
    Rochette, P.
    Britt, D. T.
    Gattacceca, J.
    Issue Date
    2006-01-01
    Keywords
    porosity
    stony meteorites
    magnetic properties
    asteroid meteorite links
    
    Metadata
    Show full item record
    Citation
    Consolmagno, G. J., Macke, R. J., Rochette, P., Britt, D. T., & Gattacceca, J. (2006). Density, magnetic susceptibility, and the characterization of ordinary chondrite falls and showers. Meteoritics & Planetary Science, 41(3), 331-342.
    Publisher
    The Meteoritical Society
    Journal
    Meteoritics & Planetary Science
    URI
    http://hdl.handle.net/10150/656108
    DOI
    10.1111/j.1945-5100.2006.tb00466.x
    Additional Links
    https://meteoritical.org/
    Abstract
    Bulk and grain densities of 132 ordinary chondrites from the Vatican Observatory collection were measured and compared with their magnetic susceptibility (for the most part using previously measured values; ten new susceptibility measures were taken for this study). Grain density and magnetic susceptibility combined provide a reliable method of classifying un weathered ordinary chondrites. Unlike traditional chemical tests, this method is fast, nondestructive, and characterizes the whole rock, making it especially appropriate for surveying large collections. The system is less viable for finds; extensive weathering of metallic iron in an H chondrite can cause it to plot among L chondrites, while heavily weathered L chondrites plot among the LL group. This system has revealed outlier stones that may be misclassified meteorites or mislabeled samples; in every case where the magnetic susceptibility of a meteorite does not fit its putative classification, the grain density is also found to be in disagreement in a manner consistent with either severe weathering or misidentification. An analysis of stones from five showers shows that, excluding outliers, these samples tend to cluster tightly within their appropriate groups in a plot of grain versus magnetic susceptibility.
    Type
    Article
    text
    Language
    en
    ISSN
    1945-5100
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1945-5100.2006.tb00466.x
    Scopus Count
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    Meteoritics & Planetary Science, Volume 41, Number 3 (2006)

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