- May 22, 2017
- Townendite
- RRUFF Ideal Chemistry changed from "Na8ZrSi6O18" to "Na8Zr4+Si6O18"
- Mineral Comment changed from to
- Jun 18, 2010
- Townendite
- Mineral Display Name changed from "IMA2009-066" to "Townendite"
- Mineral Comment changed to
- Dec 9, 2009
- Townendite
- New Mineral Entry
- Mineral Display Name changed to "IMA2009-066"
- RRUFF Ideal Chemistry changed to "Na8ZrSi6O18"
- IMA Ideal Chemistry changed to "Na8ZrSi6O18"
- IMA Number changed to "IMA2009-066"
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