“RRUFF Project Specimen ID: R040005 Locality: Langesundsfjord Eikaholmen Vestfold, Norway Source: University of Arizona Mineral Museum 16090 Brown thin tabular crystal”

“RRUFF Project Specimen ID: R040005.2 Sample Description: Microprobe Fragment Measured Chemistry: (Na1.28Ca0.36   0.36)Σ=2Zr1.00Si3.00O9·2H2O Locality: Langesundsfjord Eikaholmen Vestfold, Norway Source: University of Arizona Mineral Museum 16090 Brown thin tabular crystal”