- Jul 26, 2020
- Petersite-(Y)
- IMA Number changed from "IMA1981-064" to "IMA1981-064, IMA1987 s.p."
- Oct 13, 2017
- Petersite-(Y)
- IMA Ideal Chemistry changed from "Cu2+6Y(PO4)3(OH)6·3H2O" to "Cu6Y(PO4)3(OH)6·3H2O"
- Feb 25, 2014
- Petersite-(Y)
- RRUFF Ideal Chemistry changed from "Cu2+6Y(PO4)3(OH)6·3H2O" to "Cu2+6Y(PO4)3(OH)6·3H2O"
- IMA Ideal Chemistry changed from "Cu2+6Y(PO4)3(OH)6·3H2O" to "Cu2+6Y(PO4)3(OH)6·3H2O"
- Sep 12, 2012
- Petersite-(Y)
- RRUFF Ideal Chemistry changed from "Cu6Y(PO4)3(OH)6·3H2O" to "Cu2+6Y(PO4)3(OH)6·3H2O"
- IMA Ideal Chemistry changed from "Cu6Y(PO4)3(OH)6·3H2O" to "Cu2+6Y(PO4)3(OH)6·3H2O"
- May 27, 2007
- Petersite-(Y)
- RRUFF Ideal Chemistry changed from "Cu6(Y,Ca)(PO4)3(OH)6·3H2O" to "Cu6Y(PO4)3(OH)6·3H2O"
- Apr 10, 2007
- Petersite-(Y)
- IMA Ideal Chemistry changed from "Cu6(Y,Ca)(PO4)3(OH)6·3H2O" to "Cu6Y(PO4)3(OH)6·3H2O"
- May 10, 2006
- Petersite-(Y)
- IMA Ideal Chemistry changed to "Cu6(Y,Ca)(PO4)3(OH)6·3H2O"
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