- May 22, 2017
- Umbite
- RRUFF Ideal Chemistry changed from "K2ZrSi3O9·H2O" to "K2Zr4+Si3O9·H2O"
- Mineral Comment changed from to
- Oct 5, 2012
- Umbite
- Mineral Comment changed from to
- May 27, 2008
- Umbite
- Mineral Comment changed to
- May 26, 2006
- Umbite
- IMA Ideal Chemistry changed to "K2ZrSi3O9·H2O"
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