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Copiapite Group

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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

Relationship of Copiapite Group to other Species

Group Members:
Aluminocopiapite Al2/3Fe43+(SO4)6(OH)2 · 20H2O
Calciocopiapite CaFe4(SO4)6(OH)2 · 10H2O
Copiapite Fe2+Fe43+(SO4)6(OH)2 · 20H2O
Cuprocopiapite CuFe4(SO4)6(OH)2 · 20H2O
Ferricopiapite Fe5(SO4)6O(OH) · 20H2O
Magnesiocopiapite MgFe43+(SO4)6(OH)2 · 20H2O
Zincocopiapite ZnFe43+(SO4)6(OH)2 · 18H2O

Other Information

Health Risks:
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 URL:
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Localities for Copiapite Group

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