Geoscience Reference
In-Depth Information
Compound
Representative
Cell
Parameter
(
˚
)
Rate Earth, Co.
No., Average
Bond Distance
(
˚
)
Tetrahedral
Radical
Form
Rare Earth
Polyhedra
R
2
[GeO
4
]O
Sm
2
[GeO
4
]O
P2
1
/cz
5
4
Orthotetrahedra
Framework
R
5
La
Tb
a
5
9.4
b
5
7.2
c
5
6.9
β
5
108
R
2
[GeO
4
]O
Er
2
[GeO
4
]O
B2/bz
5
8
Orthotetrahedra
Framework
R
5
Dy
Lu, Y
a
5
14.86
b
5
10.56
c
5
6.83
γ
5
122.10
Sc
2
[GeO
4
]O
B2/bz
5
8
Sc
6
2.09
Orthotetrahedra
Framework
a
5
10.927
b
5
10.656
c
5
10.486
γ
5
93.96
R
4
[GeO
4
]
4
La
4
[GeO
4
]O
4
Hexagonal
Orthotetrahedra
R
5
La
Gd
a
5
10.54
c
5
7.63
R
4
[GeO
4
]
4
Nd
4
[GeO
4
]O
4
Pmc2
1
z
5
4
Nd
8
2.50
Orthotetrahedra
Framework
R
5
Tb
Lu, Sc
a
5
7.475
b
5
5.757
c
5
17.927
(Continued)
