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Halotrichite Group

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Halotrichite
Almería, Andalusia, Spain
© Paolo Grosso

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Formula:
MAl
 
2
(SO
 
4
)
 
4
·22H
 
2
O


A group of hydrated sulphates with the above general formula, where M = divalent Fe, Mg, Mn, Zn, Co.

Classification of Halotrichite Group

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Chemical Properties of Halotrichite Group

Formula:
MAl
 
2
(SO
 
4
)
 
4
·22H
 
2
O

Relationship of Halotrichite Group to other Species

Group Members:
Apjohnite
Mn
2+
 
Al
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
Bílinite
Fe
2+
 
Fe
3+
2
(SO
 
4
)
 
4
 · 22H
 
2
O
Dietrichite
(Zn,Fe
2+
 
,Mn
2+
 
)Al
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
Halotrichite
FeAl
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
Pickeringite
MgAl
 
2
(SO
 
4
)
 
4
 · 22H
 
2
O
Redingtonite
(Fe
2+
 
,Mg,Ni)(Cr,Al)
 
2
(SO
 
4
)
 
4
·22H
 
2
O
Wupatkiite
(Co,Mg,Ni)Al
 
2
(SO
 
4
)
 
4
·22H
 
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 Halotrichite Group

Reference List:

- +
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 522-523.

Ballirano, P. (2006): Crystal chemistry of the halotrichite group XAl2(SO4)4·22H2O: the X = Fe-Mg-Mn-Zn compositional tetrahedron. European Journal of Mineralogy, 18, 463-469.

Internet Links for Halotrichite Group

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    • Localities for Halotrichite Group

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    Updated Mineral Entry: AdeliteFrom Vik Vanrusselt, 14th Feb 2012 14:42:48