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Aldermanite, a new magnesium aluminium phosphate

Published online by Cambridge University Press:  05 July 2018

I. R. Harrowfield ,
E. R. Segnit  and
J. A. Watts
I. R. Harrowfield
Affiliation:
CSIRO Division of Mineral Chemistry, Port Melbourne, Australia
E. R. Segnit
Affiliation:
CSIRO Division of Mineral Chemistry, Port Melbourne, Australia
J. A. Watts
Affiliation:
CSIRO Division of Mineral Chemistry, Port Melbourne, Australia
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Abstract

A new magnesium aluminium phosphate mineral with the ideal formula Mg5Al12(PO4)4(OH)22·nH2O (n ⋍ 32) has been named aldermanite. It occurs as minute talc-like flakes, partly as an alteration product of fluellite, thinly coating cracks and cavities in a brecciated metamorphosed rock phosphate at Moculta, South Australia. Strongest X-ray diffraction lines are 13.40 Å (100) 002, 7.98 Å (80) 011, 5.55 Å (60) 210; unit cell parameters a= 15.00±0.007, b=8.330±0.006, c= 26.60±0.01 Å, Z = 2.

Type
Research Article
Information
Mineralogical Magazine , Volume 44 , Issue 333 , March 1981 , pp. 59 - 62
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1981

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Footnotes

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Author to whom correspondence should be addressed.

References

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