List of specified cards with unique numbers under unique name
ECKERMANNITE
NN
Card
Specie
Formula
Space Group
1.
1303
[7], Cr, F-analogue, DF
Na(Na,Mg)
2
(Mg,Cr)
5
Si
8
O
22
F
2
C 2/m
2.
1304
[8], Cr, F-analogue, DF
Na(Na,Mg)
2
(Mg,Cr)
5
Si
8
O
22
F
2
C 2/m