AFG - Afghanite
AFG
Afghanite
P6
3
/mmc
Secondary Building Unit:
single 6-rings (or single 4-rings)
Type Material:
Afghanite
(Na
2
,Ca,K
2
)
12
[Al
24
Si
24
O
96
] ~ (Na
2
,Ca,K
2
)
6
(Cl
2
,SO
4
,CO
3
)
6
.2H
2
O
Hexagonal, (P6
3
/mmc, P6
3
/mc or P&hibar;62c
1
, a=12.8, c=21.4 Å