Articles | Volume 34, issue 5
https://doi.org/10.5194/ejm-34-439-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-34-439-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Oct 2022
Research article |
| 10 Oct 2022
| 10 Oct 2022
New secondary phosphate mineral occurrences and their crystal chemistry, at the Hagendorf Süd pegmatite, Bavaria
Erich Keck
Algunderweg 3, 92694 Etzenricht, Germany
Ian E. Grey
CORRESPONDING AUTHOR
Mineral Resources, CSIRO, Private Bag 10, Clayton South, Victoria 3169,
Australia
Colin M. MacRae
Mineral Resources, CSIRO, Private Bag 10, Clayton South, Victoria 3169,
Australia
Stephanie Boer
Australian Synchrotron, ANSTO, 800 Blackburn Road, Clayton, Victoria
3168, Australia
Rupert Hochleitner
Bavarian State Collection for Mineralogy (SNSB), Theresienstrasse 41, 80333 Munich, Germany
Christian Rewitzer
Stadtplatz 17, 93437 Furth im Wald, Germany
William G. Mumme
Mineral Resources, CSIRO, Private Bag 10, Clayton South, Victoria 3169,
Australia
A. Matt Glenn
Mineral Resources, CSIRO, Private Bag 10, Clayton South, Victoria 3169,
Australia
Cameron Davidson
Mineral Resources, CSIRO, Private Bag 10, Clayton South, Victoria 3169,
Australia
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A reinvestigation of angastonite from the type locality has shown that it is a mixture of crystalline phases and an amorphous phase, with the published formula corresponding to the amorphous phase. A redefinition proposal for angastonite as an amorphous mineral was approved by the IMA CNMNC. Our study showed how the amorphous phase formed and how it progressively recrystallises as new crandallite-related minerals.
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Short summary
First occurrences of the secondary phosphate minerals kenngottite, Mn32+Fe43+(PO4)4(OH)6(H2O)2; allanpringite, Fe33+(PO4)2(OH)3·5H2O; iangreyite, Ca2Al7(PO4)2(PO3OH)2(OH,F)15·8H2O; and nizamoffite, MnZn2(PO4)2(H2O)4, from the Hagendorf Süd pegmatite are reported, with characterisation of their crystal chemistry and phase associations.
First occurrences of the secondary phosphate minerals kenngottite, Mn32+Fe43+(PO4)4(OH)6(H2O)2;...
