- Jun 2, 2019
- Ussingite
- IMA Ideal Chemistry changed from "Na2AlSI3O8(OH)" to "Na2AlSi3O8(OH)"
- Oct 13, 2017
- Ussingite
- IMA Ideal Chemistry changed from "Na2AlSi3O8(OH)" to "Na2AlSI3O8(OH)"
- Oct 22, 2010
- Oct 20, 2010
- Apr 16, 2007
- Ussingite
- IMA Ideal Chemistry changed to "Na2AlSi3O8(OH)"
- Apr 21, 2006
- Ussingite
- RRUFF Ideal Chemistry changed from "Na2AlSi3O8(OH)" to "Na2AlSi3O8(OH)"
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