- Oct 13, 2017
- Gypsum
- IMA Ideal Chemistry changed from "CaSO4·2H2O" to "Ca(SO4)·2H2O"
- Jan 4, 2015
- Gypsum
- RRUFF Ideal Chemistry changed from "CaSO4·2H2O" to "CaS6+O4·2H2O"
- May 7, 2013
- Gypsum
- Mineral Comment changed to
- Apr 17, 2007
- Gypsum
- IMA Ideal Chemistry changed to "CaSO4·2H2O"
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