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Halotrichite Group

Big Photo

Dubník, Červenica (Czerwenitza), Northern Slanské Mts, Prešov Region, Slovakia
© Vítězslav Snášel

Show Halotrichite Group Photos (2)
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

Minerals in Group:
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

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Hungary
     
    • Heves Co.
      • Mátra Mts.
        • Gyöngyösoroszi
    		Farkas, I. M. & Weiszburg, T. G. (2009): Mitt. Österr. Mineral. Ges. 155, 57. (Abs.)
    USA
     
    • Utah
      • Emery Co.
        • San Rafael District (San Rafael Swell)
    		Patrick Haynes, FOUR CORNERS MINERAL NEWS in New Mexico Mineral Symposium 2004
    Mineral and/or Locality
    Google
     
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