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The Occurrence of Robertsite in a Sedimentary Phosphate Ore from Thailand
Published online by Cambridge University Press: 05 July 2018
Abstract
During a mineralogical study of guano-derived sedimentary phosphate ore from the Lamphun area of northwest Thailand, robertsite [Ca6(H2O)6Mn3+9O6(PO4)9.3H2O] was identified and concentrated to a level suitable for X-ray diffraction and chemical analysis. Robertsite has previously been described only in association with altered phosphatic pegmatites. This new occurrence in a phosphate deposit indicates that it may be found in a broad spectrum of sedimentary rocks.
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- Mineralogy
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- Copyright © The Mineralogical Society of Great Britain and Ireland 1988
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