- Jul 27, 2023
- Hellandite-(Y)
- IMA Number changed from "IMA2000-F, IMA2002 s.p." to "IMA2002 s.p."
- Jul 12, 2022
- Hellandite-(Y)
- IMA Number changed from "IMA2000-F" to "IMA2000-F, IMA2002 s.p."
- May 3, 2022
- Jun 10, 2017
- Hellandite-(Y)
- RRUFF Ideal Chemistry changed from "(Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2" to "(Ca,REE)4Y2Al 2(B4Si4O22)(OH)2"
- IMA Ideal Chemistry changed from "(Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2" to "(Ca,REE)4Y2Al 2(B4Si4O22)(OH)2"
- Sep 13, 2015
- Hellandite-(Y)
- RRUFF Ideal Chemistry changed from "(Ca3Y)Y2Al(B4Si4O22)(OH)2" to "(Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2"
- IMA Ideal Chemistry changed from "(Ca3Y)Y2Al(B4Si4O22)(OH)2" to "(Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2"
- Sep 6, 2013
- Hellandite-(Y)
- RRUFF Ideal Chemistry changed from "(Ca3Y)Y2AlB4Si4O22(OH)2" to "(Ca3Y)Y2Al(B4Si4O22)(OH)2"
- IMA Ideal Chemistry changed from "(Ca3Y)Y2AlB4Si4O22(OH)2" to "(Ca3Y)Y2Al(B4Si4O22)(OH)2"
- Oct 14, 2009
- Nov 11, 2008
- Hellandite-(Y)
- RRUFF Ideal Chemistry changed from "(Ca,Y)4(Y,Ca)2(Al,Fe3+)B4Si4O22(OH)2" to "(Ca3Y)Y2AlB4Si4O22(OH)2"
- IMA Ideal Chemistry changed from "(Ca,Y)4(Y,Ca)2(Al,Fe3+)B4Si4O22(OH)2" to "(Ca3Y)Y2AlB4Si4O22(OH)2"
- Mineral Comment changed from to
- Jun 29, 2006
- Hellandite-(Y)
- IMA Ideal Chemistry changed to "(Ca,Y)4(Y,Ca)2(Al,Fe3+)B4Si4O22(OH)2"
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