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Maghrebite

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Aghbar open pit, Aghbar, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco

Show Maghrebite Photos (4)
Formula:
MgAl
 
2
[OH|AsO
 
4
]
 
2
 · 8H
 
2
O
System:TriclinicColour:Colourless
Name:For the Maghreb region of Morocco, where the type locality is situated.


The As analogue of Gordonite. A member of the Laueite Group.

Classification of Maghrebite

IMA status:Approved 2005
Strunz 8th edition ID:7/D.10-15
Nickel-Strunz 10th (pending) edition ID:8.DC.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
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Type Occurrence of Maghrebite

Type Locality:Aghbar Mine (Arhbar Mine), Aghbar, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
General Appearance of Type Material:acute tabular crystals up to 0.2 mm in length, in fan-shaped aggregates
Place of Conservation of Type Material:Musée Géologique Cantonal, Lausanne, Switzerland (MGL no. 79792, holotype, and MGL nos. 79793 and 79794, co-types)
Geological Setting of type material:Second-stage oxidation products of Co-Ni ores
Associated Minerals at type locality:
WendwilsoniteTalmessiteRoseliteQuartzDolomite

Physical Properties of Maghrebite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless
Streak:White
Cleavage:Perfect
on (010)

Crystallography of Maghrebite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 5.436Å, b = 7.075Å, c = 10.5Å
α = 97.701°, β = 102.021°, γ = 110.295°
Ratio:a:b:c = 0.768 : 1 : 1.484
Unit Cell Volume:V 360.97 ų (Calculated from Unit Cell)
Morphology:Crystals are prismatic on [001] to tabular on {010], with dominating {010}, {001} and {110} faces and minor {100} and {011} faces.
X-Ray Powder Diffraction:
d-spacingIntensity
9.9 (100)
6.4 (90)

Chemical Properties of Maghrebite

Formula:
MgAl
 
2
[OH|AsO
 
4
]
 
2
 · 8H
 
2
O
Essential elements:
All elements listed in formula:Al, As, H, Mg, O

Relationship of Maghrebite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.DC.IMA 2007-057
CuFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
·4H
 
2
O
8.DC.05Nissonite
Cu
 
2
Mg
 
2
[OH|PO
 
4
]
 
2
 · 5H
 
2
O
8.DC.07Euchroite
Cu
 
2
[OH|AsO
 
4
] · 3H
 
2
O
8.DC.10Legrandite
Zn
 
2
[OH|AsO
 
4
] · H
 
2
O
8.DC.12Strashimirite
Cu
 
8
[OH|AsO
 
4
]
 
4
 · 5H
 
2
O
8.DC.15Arthurite
CuFe
3+
2
[(OH,O)|(AsO
 
4
,PO
 
4
,SO
 
4
)]
 
2
 · 4H
 
2
O
8.DC.15Earlshannonite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
·4H
 
2
O
8.DC.15Ojuelaite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Whitmoreite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Cobaltarthurite
(Co,Mg)Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Bendadaite
Fe
2+
 
Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.17Kleemanite
ZnAl
 
2
[OH|PO
 
4
]
 
2
 · 3H
 
2
O
8.DC.20Bermanite
Mn
2+
 
Mn
3+
2
[OH|PO
 
4
]
 
2
 · 4H
 
2
O
8.DC.22Kovdorskite
Mg
 
2
(PO
 
4
)(OH)·3H
 
2
O
8.DC.25Ferristrunzite
Fe
3+
3
[OH|PO
 
4
]
 
2
 · 5(H
 
2
O,OH)
8.DC.25Ferrostrunzite
Fe
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
8.DC.25Metavauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.25Strunzite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
8.DC.27Beraunite
Fe
2+
 
Fe
3+
5
[(OH)
 
5
|(PO
 
4
)
 
4
] · 4H
 
2
O
8.DC.30Gordonite
MgAl
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Laueite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Mangangordonite
Mn
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Paravauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Pseudolaueite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Sigloite
Fe
3+
 
Al
 
2
[(OH)
 
3
|(PO
 
4
)
 
2
] · 7H
 
2
O
8.DC.30Stewartite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Ushkovite
MgFe
3+
2
[PO
 
4
]
 
2
(OH)
 
2
 · 8H
 
2
O
8.DC.30Ferrolaueite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
8.DC.30Kastningite
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.32Tinticite
Fe
3+
4
[OH|PO
 
4
]
 
3
 · 5H
 
2
O
8.DC.35Vauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
8.DC.37Vantasselite
Al
 
4
[OH|PO
 
4
]
 
3
 · 9H
 
2
O
8.DC.40Cacoxenite
Fe
3+
24
Al[(OH)
 
12
|O
 
6
|(PO
 
4
)
 
17
] · 17H
 
2
O
8.DC.45Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DC.45Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DC.47Kingite
Al
 
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 9H
 
2
O
8.DC.50Wavellite
Al
 
3
[(OH,F)
 
3
|(PO
 
4
)
 
2
] · 5H
 
2
O
8.DC.50Allanpringite
Fe
3+
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 5H
 
2
O
8.DC.52Kribergite
Al
 
5
[(OH)
 
4
|SO
 
4
|(PO
 
4
)
 
3
] · 4H
 
2
O
8.DC.55Mapimite
Zn
 
2
Fe
3+
3
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 10H
 
2
O
8.DC.57Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)[(OH)
 
3
|(AsO
 
4
)
 
2
]
 
2
 · 6H
 
2
O
8.DC.60Nevadaite
(Cu
2+
 
,Al,V
3+
 
)
 
6
Al
 
8
(PO
 
4
)
 
8
F
 
8
(OH)
 
2
(H
 
2
O)
 
22
8.DC.60Cloncurryite
(Cu,VO)Al
 
2
[(F,OH)|PO
 
4
]
 
2
 · 4.5-5H
 
2
O

Other Names for Maghrebite

Synonyms:
IMA2005-044
German names:
Maghrebit

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 Maghrebite

Reference List:N. Meisser, J. Brugger (2006): "Bouazzerit und Maghrebit, zwei neue Arsenatmineralien aus dem Revier Bou Azzer, Marokko", Lapis 31(7/8), 69-71. (in German)

Internet Links for Maghrebite

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    Localities for Maghrebite

    (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.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azzer District
            • Aghbar
    		N. Meisser, J. Brugger (2006): "Bouazzerit und Maghrebit, zwei neue Arsenatmineralien aus dem Revier Bou Azzer, Marokko", Lapis 31(7/8), 69-71
    Mineral and/or Locality
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