- Sep 4, 2023
- Hellandite-(Ce)
- RRUFF Ideal Chemistry changed from "(Ca,REE)4Ce2Al 2(B4Si4O22)(OH)2" to "(Ca,REE)4Ce3+2Al 2(B4Si4O22)(OH)2"
- Jun 10, 2017
- Hellandite-(Ce)
- IMA Ideal Chemistry changed from "(Ca,REE)4Ce2Al(Be,Li)2-xB4Si4O22(OH)2" to "(Ca,REE)4Ce2Al 2(B4Si4O22)(OH)2"
- RRUFF Ideal Chemistry changed from "(Ca,REE)4Ce2Al(Be,Li)2-xB4Si4O22(OH)2" to "(Ca,REE)4Ce2Al 2(B4Si4O22)(OH)2"
- Sep 13, 2015
- Hellandite-(Ce)
- IMA Ideal Chemistry changed from "(Ca3Ce)Ce2Al(B4Si4O22)(OH)2" to "(Ca,REE)4Ce2Al(Be,Li)2-xB4Si4O22(OH)2"
- RRUFF Ideal Chemistry changed from "(Ca3Ce)Ce2Al(B4Si4O22)(OH)2" to "(Ca,REE)4Ce2Al(Be,Li)2-xB4Si4O22(OH)2"
- Sep 6, 2013
- Hellandite-(Ce)
- RRUFF Ideal Chemistry changed from "(Ca3Ce)Ce2AlB4Si4O22(OH)2" to "(Ca3Ce)Ce2Al(B4Si4O22)(OH)2"
- IMA Ideal Chemistry changed from "(Ca3Ce)Ce2AlB4Si4O22(OH)2" to "(Ca3Ce)Ce2Al(B4Si4O22)(OH)2"
- Nov 12, 2008
- Hellandite-(Ce)
- RRUFF Ideal Chemistry changed from "(Ca,Ce)4(Ce,Ca,Th)2(Al,Fe3+,Ti)(Be,Li)2-xB4Si4O22(O,OH,F)2" to "(Ca3Ce)Ce2AlB4Si4O22(OH)2"
- IMA Ideal Chemistry changed from "(Ca,Ce)4(Ce,Ca,Th)2(Al,Fe3+,Ti)(Be,Li)2-xB4Si4O22(O,OH,F)2" to "(Ca3Ce)Ce2AlB4Si4O22(OH)2"
- Mineral Comment changed from to
- Feb 26, 2008
- Hellandite-(Ce)
- RRUFF Ideal Chemistry changed from "(Ca,Ce)4(Ce,Ca)2(Al,Fe3+,Ti)(Be,Li)B4Si4O22(O,OH,F)2" to "(Ca,Ce)4(Ce,Ca,Th)2(Al,Fe3+,Ti)(Be,Li)2-xB4Si4O22(O,OH,F)2"
- IMA Ideal Chemistry changed from "(Ca,Ce)4(Ce,Ca)2(Al,Fe3+,Ti)(Be,Li)B4Si4O22(O,OH,F)2" to "(Ca,Ce)4(Ce,Ca,Th)2(Al,Fe3+,Ti)(Be,Li)2-xB4Si4O22(O,OH,F)2"
- Jun 29, 2006
- Hellandite-(Ce)
- IMA Ideal Chemistry changed to "(Ca,Ce)4(Ce,Ca)2(Al,Fe3+,Ti)(Be,Li)B4Si4O22(O,OH,F)2"
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