- Oct 13, 2017
- Burgessite
- IMA Ideal Chemistry changed from "Co2(H2O)4(AsO3OH)2·H2O" to "Co2(H2O)4[AsO3(OH)]2(H2O)"
- Dec 15, 2013
- Burgessite
- RRUFF Ideal Chemistry changed from "Co2(H2O)4(AsO3OH)2·H2O" to "Co2+2(H2O)4(As5+O3OH)2·H2O"
- Sep 2, 2012
- Oct 3, 2009
- May 2, 2009
- Burgessite
- RRUFF Ideal Chemistry changed from "Co2(AsO3OH)2·5H2O" to "Co2(H2O)4(AsO3OH)2·H2O"
- IMA Ideal Chemistry changed from "Co2(AsO3OH)2·5H2O" to "Co2(H2O)4(AsO3OH)2·H2O"
- Apr 4, 2009
- Burgessite
- Mineral Display Name changed from "IMA2007-055" to "Burgessite"
- RRUFF Ideal Chemistry changed from "CoAsO3(OH)·2.5H2O" to "Co2(AsO3OH)2·5H2O"
- IMA Ideal Chemistry changed from "CoAsO3(OH)·2.5H2O" to "Co2(AsO3OH)2·5H2O"
- Mineral Comment changed to
- Sep 21, 2008
- Burgessite
- RRUFF Ideal Chemistry changed from "Co(H2O)2[AsO3(OH)]{H2O}0.5" to "CoAsO3(OH)·2.5H2O"
- IMA Ideal Chemistry changed from "Co(H2O)2[AsO3(OH)]{H2O}0.5" to "CoAsO3(OH)·2.5H2O"
- Apr 9, 2008
- Burgessite
- New Mineral Entry
- Mineral Display Name changed to "IMA2007-055"
- RRUFF Ideal Chemistry changed to "Co(H2O)2[AsO3(OH)]{H2O}0.5"
- IMA Ideal Chemistry changed to "Co(H2O)2[AsO3(OH)]{H2O}0.5"
- IMA Number changed to "IMA2007-055"
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