butlerite

butlerite

[′bət·lə‚rīt]
(mineralogy)
Fe(SO4)(OH)·2H2O A deep orange, monoclinic mineral consisting of a hydrated basic ferric sulfate. Also known as parabutlerite.
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References in periodicals archive ?
Kaolin is the dominant alteration in Composites C and D from the Carbon target, and samples contain K-feldspar (67-77%), kaolin (16-26%), iron oxide (4-5%), and butlerite (2%).