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Ussingite
- Etymology : Dédié au professeur danois NIELS VIGO USSING (1864-1911 ).
- Discovery: 1914 by Boggild
- Type localityKANGERDLUARSUK, ILIMAUSSAQ, GROENLAND
Gemological data
- Chemical formula : Na2 Al Si3 O8 (OH)
