- May 13, 2021
- Oct 13, 2017
- Potassic-arfvedsonite
- IMA Ideal Chemistry changed from "KNa2Fe2+4Fe3+Si8O22(OH)2" to "KNa2(Fe2+4Fe3+)Si8O22(OH)2"
- May 12, 2014
- Potassic-arfvedsonite
- Mineral Display Name changed from "Potassicarfvedsonite" to "Potassic-arfvedsonite"
- Mineral Comment changed from to
- Jun 30, 2006
- Potassic-arfvedsonite
- New Mineral Entry
- Mineral Display Name changed to "Potassicarfvedsonite"
- RRUFF Ideal Chemistry changed to "KNa2Fe2+4Fe3+Si8O22(OH)2"
- IMA Ideal Chemistry changed to "KNa2Fe2+4Fe3+Si8O22(OH)2"
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