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Ca(Mg,Al)3(Al3Si)O10(OH)2
Monoclinic
Clintonite, a calcium magnesium aluminosilicate hydroxide mineral, is in the brittle-mica group and is related to margarite. It is found only rarely in the local parts of the Franklin Marble, but more abundantly in the northern extent of the formation in New York. It was reported from Franklin by Struwe (1957) as occurring as 3 mm brown crystals with a bronzy luster, resembling phlogopite, and associated with norbergite, pargasite, spinel, and graphite. It has not been seen by the writer.
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| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
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Link
to homepage
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This
page created: January 14, 2001 |
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