- Oct 13, 2017
- Armstrongite
- IMA Ideal Chemistry changed from "CaZrSi6O15·2H2O" to "CaZr(Si6O15)·2H2O"
- Nov 25, 2014
- Nov 24, 2014
- Armstrongite
- RRUFF Ideal Chemistry changed from "CaZrSi6O15·3H2O" to "CaZr4+Si6O15·2H2O"
- Mineral Comment changed from to
- Nov 17, 2014
- Armstrongite
- IMA Ideal Chemistry changed from "CaZrSi6O15·3H2O" to "CaZrSi6O15·2H2O"
- Aug 9, 2012
- Jul 14, 2012
- Armstrongite
- RRUFF Ideal Chemistry changed from "CaZrSi6O15·2.5H2O" to "CaZrSi6O15·3H2O"
- IMA Ideal Chemistry changed from "CaZrSi6O15·2.5H2O" to "CaZrSi6O15·3H2O"
- Sep 28, 2008
- Armstrongite
- RRUFF Ideal Chemistry changed from "CaZrSi6O15·3H2O" to "CaZrSi6O15·2.5H2O"
- IMA Ideal Chemistry changed from "CaZrSi6O15·3H2O" to "CaZrSi6O15·2.5H2O"
- Feb 16, 2008
- Armstrongite
- RRUFF Ideal Chemistry changed from "CaZrSi6O15·2.5H2O" to "CaZrSi6O15·3H2O"
- IMA Ideal Chemistry changed from "CaZrSi6O15·2.5H2O" to "CaZrSi6O15·3H2O"
- Apr 1, 2007
- Jun 27, 2006
- Armstrongite
- IMA Ideal Chemistry changed to "CaZrSi6O15·2.5H2O"
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