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Cation
Ammonium
[N
5+
H
4
]
+
Bismutyl
[Bi
3+
O]
+
Antimonyl
[Sb
3+
O]
+
Uranyl
[U
6+
O
2
]
2+
Oxonium
[H
3
O]
+
Neutral ion
Native Element, Alloy
Organic matter
Bound water
(Hydrate)
Zeolitic water
Anion
Chalcogenide [X]
Sulfide
[S]
2-
Disulfide
[S-S]
2-
Selenide
[Se]
2-
Diselenide [Se-Se]
2-
Telluride
[Te]
2-
Ditelluride
[Te-Te]
2-
Arsenide
[As]
Antimonide
[Sb]
Bismuthide [Bi]
Chalcogeno-salt [A
x
][P
y
][X
z
]
Sulfosalt
[X
x
][P
y
][S
z
]
Selenio-salt
[X
x
][P
y
][Se
z
]
Telluro-salt
[X
x
][P
y
][Te
z
]
Hydroxide-Halide [X]
-
Hydroxide
[OH]
Fluoride
[F]
Chloride
[Cl]
Oxides
Oxide
[O]
2-
Anion complex (Oxy-salt, Oxysalt)
Planar [XO
3
]
Borate
[B
3+
O
3
]
3-
Carbonate
[C
4+
O
3
]
2-
Nitrate
[N
5+
O
3
]
-
Soro-Planar [X
4+
2
O
4
]
2-
Oxalate
[C
2
O
4
]
2-
Pyramidal [X
5+
O
3
]
-
Antimonate
[SbO
3
]
Pyramidal [X
4+
O
3
]
2-
Sulfite
[SO
3
]
Selenite
[SeO
3
]
Tellurite
[TeO
3
]
Titanate
[TiO
3
]
Zirconate
[ZrO
3
]
Stannate [SnO
3
]
Pyramidal [X
3+
O
3
]
3-
Phosphite [PO
3
]
Arsenite
[AsO
3
]
Antimonite
[SbO
3
]
Niobate
[NbO
3
]
Tantalate
[TaO
3
]
Tetrahedron [X
7+
O
4
]
-
Permanganate [MnO
4
]: Purple
Pertechnate [TcO
4
]
Perrhenate [ReO
4
]
Tetrahedron [X
6+
O
4
]
2-
Sulfate
[SO
4
]
Selenate
[SeO
4
]
Metatellurate
[TeO
4
]
Chromate
[CrO
4
]
Molybdate
[MoO
4
]
Tungstate
[WO
4
]
Manganate [MnO
4
]: Green
Ferrate [FeO
4
]
Tetrahedron [X
5+
O
4
]
3-
Phosphate
[PO
4
]
Arsenate
[AsO
4
]
Antimonate
[SbO
4
]
Vanadate
[VO
4
]
Niobate
[NbO
4
]
Tantalate
[TaO
4
]
Hypomanganate [MnO
4
]: Blue
Tetrahedron [X
4+
O
4
]
4-
Nesosilicate
[SiO
4
]
Germanate [GeO
4
]
Manganite [MnO
4
]: Brown
Soro-Tetrahedron [X
2
O
7
]
Dichromate [Cr
6+
2
O
7
]
2-
Pyrovanadate
[V
5+
2
O
7
]
4-
Dititanate
[(Ti
4+
),Nb
5+
)
2
O
6
]
2-
Soro-Tetrahedron [X
4+
2
O
7
]
6-
Sorosilicate
[Si
2
O
7
]
Soro-borosilicate
Soro-aluminosilicate
[(Si,Al)
2
O
7
]
Soro-arsenosilicate
[AsSi
3
O
13
]
Cyclo-Tetrahedron [XO
3
]n
Cyclosilicate
[Si
3
O
9
],[Si
4
O
12
]
Cyclo-borosilicate
Cyclo-aluminosilicate
[Al
4
Si
5
O
18
]
Ino-Tetrahedron [XO
3
]n
Inosilicate
[SiO
3
],[Si
4
O
11
]
Ino-borosilicate
Ino-aluminosilicate
[AlSi
7
O
22
]
Ino-beryllium-aluminosilicate
[Be2Al2Si
9
O
26
]
Ino-vanadosilicate
[VSi
11
O
34
]
Phyllo-Tetrahedron [X
2
O
5
]n
Phyllosilicate
[Si
2
O
5
]
Phyllo-borosilicate
Phylllo-aluminosilicate
[(Si,Al)
2
O
5
]
Tecto-Tetrahedron [XO
2
]
Tectosilicate
[SiO
2
]
Tecto-borosilicate
Tecto-aluminosilicate
[(Si,Al)O
2
]
Tecto-beryllium-silicate
[(Si,Be)O
2
]
Octahedron [X
6+
O
6
]
6-
Orthotellurate
Octahedron [X
4+
O
6
]
8-
Other silicates
Octahedron framework [X
2
O
6
]
Titanate
[Ti
4+
2
O
6
]
Antimonate
[Sb
5+
2
O
6
]
Niobate
[Nb
5+
2
O
6
]
Tantalate
[Ta
5+
2
O
6
]
Tungstate
[W
6+
2
O
6
]