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Copiapite Group

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Big Photo

Copiapite
Dexter No. 7 Mine, Calf Mesa, San Rafael District (San Rafael Swell), Emery Co., Utah, USA
© Brent Thorne

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Complex group of metal(II) iron(III) sulphates.
Since two structurally different subgroups can be distinguished by X-ray diffraction methods (Majzlan & Michallik, 2007), the nomenclature might change in the future.

Classification of Copiapite Group

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Relationship of Copiapite Group to other Species

Group Members:
Aluminocopiapite
Al
 
2/3
Fe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
Calciocopiapite
CaFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
 · 10H
 
2
O
Copiapite
Fe
2+
 
Fe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
Cuprocopiapite
CuFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
Ferricopiapite
Fe
 
5
(SO
 
4
)
 
6
O(OH) · 20H
 
2
O
Magnesiocopiapite
MgFe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 20H
 
2
O
Zincocopiapite
ZnFe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
 · 18H
 
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 Copiapite Group

Reference List:

- +
Bayliss, P. & Atencio, D. (1985): X-ray powder-diffraction data and cell parameters for copiapite-group minerals. Canadian Mineralogist 23, 53-56.

Majzlan, J. & Michallik, R. (2007): The crystal structures, solid solutions, and infrared spectra of copiapite-group minerals. Mineralogical Magazine 71, 553-569.

Internet Links for Copiapite Group

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    • Localities for Copiapite Group

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