List of specified cards with unique numbers under unique name
TOURMALINE
NN
Card
Specie
Formula
Space Group
1.
4822
[2], t-tourmaline, V
(Na,Ca,Mg)(Mg,V,Cr,Fe)
3
Al
6
Si
6
B
3
O
27
(O,OH,F)
4
R 3m
2.
8606
[14], t-tourmaline, Ni, Cr, syn
Na
0.91
(Ni,Cr,Al,Fe)
3
(Al,Ni,Cr)
6
(Si,Al)
6
O
18
[BO
3
]
3
(OH,O)
4
R 3m