- Jul 27, 2023
- Oct 13, 2017
- Hemimorphite
- IMA Ideal Chemistry changed from "Zn4Si2O7(OH)2·H2O" to "Zn4(Si2O7)(OH)2·H2O"
- Mar 2, 2015
- Hemimorphite
- RRUFF Ideal Chemistry changed from "Zn4Si2O7(OH)2·H2O" to "Zn2+4Si2O7(OH)2·H2O"
- Oct 14, 2009
- Jun 29, 2006
- Hemimorphite
- IMA Ideal Chemistry changed to "Zn4Si2O7(OH)2·H2O"
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