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    Geohydrology of the Rainy Creek igneous complex near Libby, Montana 

    Zinner, Ronald Eric (University of Nevada, Reno, 1983)
    The Rainy Creek alkaline-ultramafic complex consists mainly of an ultramafic pluton crudely circular in plain view, composed primarily of magnetite pyroxenite, “vermiculite” pyroxenite, and biotite pyroxenite arranged in ...