This also looks like "iddingsite" to me - nontronitic clay and
submicroscopic haematite after primary olivine.
--
Prof. John D. Clemens
Executive Head
Dept of Geology, Geography & Environmental Studies
University of Stellenbosch
Private Bag X1, 7602 Matieland, South Africa
phone: +27 (0)21 808 3159 fax: +27 (0)21 808 3129
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Our passions cannot alter the facts, only hide them from us.
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