- May 6, 2021
- Oct 13, 2017
- Penroseite
- IMA Ideal Chemistry changed from "NiSe2" to "(Ni,Co,Cu)Se2"
- May 8, 2017
- Penroseite
- RRUFF Ideal Chemistry changed from "NiSe2" to "Ni2+(Se2)2-"
- May 27, 2007
- Penroseite
- RRUFF Ideal Chemistry changed from "(Ni,Co,Cu)Se2" to "NiSe2"
- Apr 10, 2007
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