An overview of the Prairie Creek diamond- bearing intrusion, Arkansas

Bolivar, S. L.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 6
Publication Date: Jan 1, 1987
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The Prairie Creek intrusion, near Murfreesboro, AR, is the site of the most famous diamond mine in North America. Three major rock types are associated with the intrusion-a hypabyssal peridotite, a volcanic breccia in which the majority of diamonds occur, and tuft. Previous studies, including geological, geophysical, petrological, and whole-rock and mineral chemistry are reviewed. The recent suggestion, by other workers, that this intrusion may be more correctly called a lamproite is examined. This has serious implications for diamond exploration in Arkansas and elsewhere in the US.
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