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Hydrotalcite Group

Formula:
Mg
 
6
R
3+
2
(OH)
 
16
CO
 
3
·4H
 
2
O, where R
3+
 
 = Al, Cr, or Fe


Structurally layer-lattices based on a stacking of hydroxide layers along [0001], as in brucite.

See also the related Manasseite Group.

Classification of Hydrotalcite Group

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Chemical Properties of Hydrotalcite Group

Formula:
Mg
 
6
R
3+
2
(OH)
 
16
CO
 
3
·4H
 
2
O, where R
3+
 
 = Al, Cr, or Fe

Relationship of Hydrotalcite Group to other Species

Minerals in Group:
Desautelsite:
Mg
 
6
Mn
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
Hydrotalcite:
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
Iowaite:
Mg
 
4
Fe(OH)
 
8
OCl·4H
 
2
O
Pyroaurite:
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
Stichtite:
Mg
 
6
Cr
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Hydrotalcite Group

Reference List:Frondel, C. (1941), American Mineralogist: 26: 295.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 653.

Internet Links for Hydrotalcite Group

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