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Braithwaiteite

Formula:
NaCu
 
5
(TiSb)
 
2
O
 
2
(AsO
 
4
)[AsO
 
3
(OH)]
 
2
 ·8H
 
2
O
System:TriclinicColour:blue
Name:
Named in honour of R. S. W. Braithwaite, a British mineral spectroscopist and professor at the University of Manchester, United Kingdom.


New structure type.

Classification of Braithwaiteite

IMA status:Approved 2006
Nickel-Strunz 10th (pending) edition ID:8.DB.75

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
Dana 8th edition ID:39.3.16.

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
3 : Miscellaneous
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Type Occurrence of Braithwaiteite

Type Locality:Laurani Mine, Laurani District, Aroma Province, La Paz Department, Bolivia

Physical Properties of Braithwaiteite

Colour:blue

Crystallography of Braithwaiteite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 7.0308Å, b = 9.8823Å, c = 10.6754Å
α = 106.973°, β = 104.274°, γ = 93.839°
Ratio:a:b:c = 0.711 : 1 : 1.08
Unit Cell Volume:V 679.76 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
9.825 (100)
5.887 (50)
4.635 (30)
3.354 (30)
3.232 (30)
2.947 (60)
2.736 (30)

Chemical Properties of Braithwaiteite

Formula:
NaCu
 
5
(TiSb)
 
2
O
 
2
(AsO
 
4
)[AsO
 
3
(OH)]
 
2
 ·8H
 
2
O
Essential elements:As, Cu, H, Na, O, Sb, Ti
All elements listed in formula:As, Cu, H, Na, O, Sb, Ti

Relationship of Braithwaiteite to other Species

Common Associates:
QuartzPyriteOligoclaseLavendulanLammerite
EnargiteCovelliteChlorite GroupAnataseAlbite
Related Minerals - Nickel-Strunz Grouping):

- +
8.DB.05Diadochite
Fe
3+
2
(PO
 
4
)(SO
 
4
)(OH)·5H
 
2
O
8.DB.05Pitticite
[Fe, SO
 
4
, AsO
 
4
, H
 
2
O] ?
8.DB.05Destinezite
Fe
3+
2
[OH|SO
 
4
|PO
 
4
]·6H
 
2
O
8.DB.10Vashegyite
Al
 
11
[(OH)
 
6
|(PO
 
4
)
 
9
] · 38H
 
2
O
8.DB.15Schoonerite
ZnMn
2+
 
Fe
2+
2
Fe
3+
 
(PO
 
4
)
 
3
(OH)
 
2
 · 9H
 
2
O
8.DB.20Sinkankasite
H
 
2
Mn
2+
 
Al[OH|(PO
 
4
)
 
2
] · 6H
 
2
O
8.DB.25Mitryaevaite
Al
 
6
(PO
 
4
)[(P,S)O
 
3
(OH,O)]
 
2
F
 
2
(OH)
 
2
(H
 
2
O)
 
8
· 6.5H
 
2
O
8.DB.30Sanjuanite
Al
 
2
[OH|SO
 
4
|PO
 
4
] · 9H
 
2
O
8.DB.35Sarmientite
Fe
3+
2
[OH|SO
 
4
|AsO
 
4
] · 5H
 
2
O
8.DB.40Bukovskýite
Fe
3+
2
[OH|SO
 
4
|AsO
 
4
] · 7H
 
2
O
8.DB.45Zýkaite
Fe
3+
4
[OH|SO
 
4
|(AsO
 
4
)
 
3
] · 15H
 
2
O
8.DB.50Giniite
Fe
2+
 
Fe
3+
4
[(OH)
 
5
|(PO
 
4
)
 
3
] · 2H
 
2
O
8.DB.55Sasaite
(Al,Fe
3+
 
)
 
14
[(OH)
 
7
|SO
 
4
|(PO
 
4
)
 
11
] · 83H
 
2
O
8.DB.60Mcauslanite
HFe
2+
3
Al
 
2
[F|(PO
 
4
)
 
4
] · 18H
 
2
O
8.DB.65Goldquarryite
CuCd
 
2
Al
 
3
(PO
 
4
)
 
4
F
 
2
(H
 
2
O)
 
10
(H
 
2
O,F)
 
2
8.DB.70Birchite
Cd
 
2
Cu
 
2
(PO
 
4
)
 
2
(SO
 
4
)·5H
 
2
O

Other Names for Braithwaiteite

Synonyms:
IMA 2006-050
Other Languages:

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 Braithwaiteite

Reference List:Hawthorne, F.C., Cooper, M.A. & Paar, W.H. (2008): The crystal structure of braithwaiteite. Journal of Coordination Chemistry 61, 15-29.

Paar, W.H., Cooper, M.A., Hawthorne, F.C., Moffatt, E., Gunther, M.E., Roberts, A.C., Dunn, P.J. (2009): Braithwaiteite, NaCu5(TiSb)2O2(AsO4)[AsO3(OH)]2 ·8H2O, a new mineral species from Laurani, Bolivia. Canadian Mineralogist, 47, 947-952.

Internet Links for Braithwaiteite

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    Localities for Braithwaiteite

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