- Oct 13, 2017
- Cordierite
- IMA Ideal Chemistry changed from "Mg2Al3(AlSi5)O18" to "Mg2Al4Si5O18"
- May 30, 2016
- Cordierite
- RRUFF Ideal Chemistry changed from "Mg2Al4Si5O18" to "Mg2Al3(AlSi5)O18"
- IMA Ideal Chemistry changed from "Mg2Al4Si5O18" to "Mg2Al3(AlSi5)O18"
- Aug 2, 2009
- Apr 4, 2007
- Cordierite
- IMA Ideal Chemistry changed to "Mg2Al4Si5O18"
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