- Oct 13, 2017
- Armbrusterite
- IMA Ideal Chemistry changed from "Na6K5Mn3+Mn2+14[Si9O22]4(OH)10·4H2O" to "Na6K5Mn3+Mn2+14(Si9O22)4(OH)10·4H2O"
- Aug 7, 2012
- Jun 9, 2007
- Armbrusterite
- RRUFF Ideal Chemistry changed from "K5Na6Mn3+Mn2+14[Si9O22]4(OH)10·4H2O" to "Na6K5Mn3+Mn2+14[Si9O22]4(OH)10·4H2O"
- Apr 1, 2007
- Mar 22, 2007
- Armbrusterite
- IMA Ideal Chemistry changed to "Na6K5Mn3+Mn2+14[Si9O22]4(OH)10·4H2O"
- Feb 26, 2007
- Armbrusterite
- New Mineral Entry
- Mineral Display Name changed to "Armbrusterite"
- RRUFF Ideal Chemistry changed to "K5Na6Mn3+Mn2+14[Si9O22]4(OH)10·4H2O"
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