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Magnesiocopiapite

Big Photo

Wieściszowice, Rudawy Janowickie Mts, Lower Silesia (Dolnośląskie), Poland
© Elmar Lackner

Show Magnesiocopiapite Photos (5)
Formula:
MgFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
System:TriclinicHardness:2½ - 3
Name:In allusion to its composition with dominant MAGNESIum and its relationship to COPIAPITE.


Copiapite Group.

Classification of Magnesiocopiapite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/D.10-40
Nickel-Strunz 10th (pending) edition ID:7.DB.35

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
Dana 8th edition ID:31.10.5.2

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous
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Type Occurrence of Magnesiocopiapite

Type Locality:Blythe, Riverside Co., California, USA
Year of Discovery:1938

Physical Properties of Magnesiocopiapite

Hardness (Mohs):2½ - 3

Crystallography of Magnesiocopiapite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1

Chemical Properties of Magnesiocopiapite

Formula:
MgFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
Essential elements:Fe, H, Mg, O, S
All elements listed in formula:Fe, H, Mg, O, S

Relationship of Magnesiocopiapite to other Species

Member of Group:
Copiapite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
7.DB.05Aubertite
CuAl[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.05Magnesioaubertite
(Mg,Cu)Al[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.05Svyazhinite
(Mg,Mn
2+
 
,Ca)(Al,Fe
3+
 
)[F|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.10Khademite
Al[F|SO
 
4
] · 5H
 
2
O
7.DB.10Rostite
Al[OH|SO
 
4
] · 5H
 
2
O
7.DB.15Jurbanite
Al[OH|SO
 
4
] · 5H
 
2
O
7.DB.20Minasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.20Orthominasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.20Anorthominasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.25Bobjonesite
(V
4+
 
O)[SO
 
4
] · 3H
 
2
O
7.DB.30Amarantite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 7H
 
2
O
7.DB.30Hohmannite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 8H
 
2
O
7.DB.30Metahohmannite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 4H
 
2
O
7.DB.35Aluminocopiapite
Al
 
2/3
Fe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Calciocopiapite
CaFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
·10H
 
2
O
7.DB.35Copiapite
Fe
2+
 
Fe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Cuprocopiapite
CuFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
·20H
 
2
O
7.DB.35Ferricopiapite
Fe
 
5
(SO
 
4
)
 
6
O(OH)·20H
 
2
O
7.DB.35Zincocopiapite
ZnFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 18H
 
2
O

Other Names for Magnesiocopiapite

Other Languages:
German:Magnesiocopiapit
Japanese:苦土コピアポ石
Spanish:Magnesiocopiapita

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 Magnesiocopiapite

Reference List:Berry (1938) American Mineralogist: 23, pt. 2(12): 3.

American Mineralogist (1939): 24: 182.

University of Toronto Stud., Geol. Series, no. 51 (1947): 21.

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.: 623.

Canadian Mineralogist (1985): 23: 55.

Internet Links for Magnesiocopiapite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Magnesiocopiapite in the Natural History Museum (London) online catalogue
  • Magnesiocopiapite details from Handbook of Mineralogy (PDF)
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    Localities for Magnesiocopiapite

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