- Oct 13, 2017
- Gregoryite
- IMA Ideal Chemistry changed from "Na2CO3" to "Na2(CO3)"
- Oct 30, 2012
- Mar 19, 2008
- May 23, 2007
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- RRUFF Ideal Chemistry changed from "(Na2,K2,Ca)CO3" to "Na2CO3"
- Apr 17, 2007
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- IMA Ideal Chemistry changed from "(Na2,K2,Ca)CO3" to "Na2CO3"
- Jun 29, 2006
- Gregoryite
- IMA Ideal Chemistry changed to "(Na2,K2,Ca)CO3"
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