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Fe3(AsO4)2.8H2O
Monoclinic
Parasymplesite, an iron arsenate hydrate mineral, occurs associated with koettigite on the 340 level at Sterling Hill. It occurs as gray to grayish-blue prismatic crystals, very similar in habit and appearance to its Zn-analogue, koettigite, which is, however, much more abundant locally. Parasymplesite was verified employing X-ray methods and chemical analyses. The one verified specimen has Fe:Zn:Mn = 50:37:13. Both chemical and X-ray methods are suggested for verification. Parasymplesite is likely quite rare, but few specimens of the koettigite-parasymplesite series have been analyzed. It is locally replaced by yukonite, and it has not been reported from Franklin.
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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 11, 2001 |
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