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The Occurrence of Robertsite in a Sedimentary Phosphate Ore from Thailand

Published online by Cambridge University Press:  05 July 2018

Steven J. Van Kauwenbergh ,
Michelle Cooper-Fleck  and
Marilyn R. Williams
Steven J. Van Kauwenbergh
Affiliation:
Fertilizer Technology Division, International Fertilizer Development Center, Muscle Shoals, Alabama 35662, USA
Michelle Cooper-Fleck
Affiliation:
Fertilizer Technology Division, International Fertilizer Development Center, Muscle Shoals, Alabama 35662, USA
Marilyn R. Williams
Affiliation:
Fertilizer Technology Division, International Fertilizer Development Center, Muscle Shoals, Alabama 35662, USA
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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.

Keywords

robertsitephosphate oreThailand
Type
Mineralogy
Information
Mineralogical Magazine , Volume 52 , Issue 367 , September 1988 , pp. 505 - 508
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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