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Gillardite

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132 North Mine, Widgiemooltha, Western Australia, Australia
© viccloete

Show Gillardite Photos (4)
Formula:
Cu
 
3
NiCl
 
2
(OH)
 
6
System:Trigonal
Isostructural with:Herbertsmithite


Closely related to paratacamite.

At least some of the gillardite from the type locality was originally considered to be "Ni-bearing paratacamite".

Classification of Gillardite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID:3.DA.10c

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
Dana 8th edition ID:10.1.2.4

10 : OXYHALIDES AND HYDROXYHALIDES
1 : A2(O,OH)3Xq
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Type Occurrence of Gillardite

Type Locality:132 North Mine, Widgiemooltha, Western Australia, Australia

Crystallography of Gillardite

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:R3m (R3 2/m)
Cell Parameters:a = 6.8364Å, c = 13.8459Å
Ratio:a:c = 1 : 2.025
Unit Cell Volume:V 560.41 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
5.463 (100)
4.651 (16)
4.519 (11)
2.903 (19)
2.755 (69)
2.728 (14)
2.257 (39)

Chemical Properties of Gillardite

Formula:
Cu
 
3
NiCl
 
2
(OH)
 
6
All elements listed in formula:Cl, Cu, H, Ni, O

Relationship of Gillardite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.DA.05Melanothallite
Cu
 
2
[O|Cl
 
2
]
3.DA.10aAtacamite
Cu
 
2
[(OH)
 
3
|Cl]
3.DA.10bBotallackite
Cu
 
2
[(OH)
 
3
|Cl]
3.DA.10bClinoatacamite
Cu
 
2
[(OH)
 
3
|Cl]
3.DA.10aHibbingite
Fe
2+
2
[(OH)
 
3
|Cl]
3.DA.10aKempite
Mn
2+
2
[(OH)
 
3
|Cl]
3.DA.10cParatacamite
Cu
 
3
(Cu,Zn)[(OH)
 
3
|Cl]
 
2
3.DA.10bBelloite
Cu[OH|Cl]
3.DA.10cHerbertsmithite
Cu
 
3
Zn[(OH)
 
3
|Cl]
 
2
3.DA.10cKapellasite
Cu
 
3
Zn[(OH)
 
3
|Cl]
 
2
3.DA.10cHaydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
3.DA.15Claringbullite
Cu
 
4
[(OH)
 
7
|Cl] · nH
 
2
O
3.DA.20Simonkolleite
Zn
 
5
[(OH)
 
8
|Cl
 
2
] · H
 
2
O
3.DA.25Buttgenbachite
Cu
 
19
[(OH)
 
32
|(NO
 
3
)
 
2
|Cl
 
4
] · 2H
 
2
O
3.DA.25Connellite
Cu
 
19
[(OH)
 
32
|SO
 
4
|Cl
 
4
] · 3H
 
2
O
3.DA.30Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
3.DA.35Ponomarevite
K
 
4
Cu
 
4
[O|Cl
 
10
]
3.DA.40Anthonyite
Cu(OH,Cl)
 
2
 · 3H
 
2
O
3.DA.40Calumetite
Cu(OH,Cl)
 
2
 · 2H
 
2
O
3.DA.45Khaidarkanite
Na
 
0.34
Cu
 
4
Al
 
3
(OH)
 
14
F
 
3
·2H
 
2
O
3.DA.50Bobkingite
Cu
 
5
[(OH)
 
8
|Cl
 
2
] · 2H
 
2
O
3.DA.55Avdoninite
K
 
2
Cu
 
5
[(OH)
 
4
|Cl
 
8
] · H
 
2
O

Other Names for Gillardite

Synonyms:
IMA2006-041
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 Gillardite

Reference List:Clissold, M.E., et al.: "The structure of gillardite, the Ni-analog of herbertsmithite, from Widgiemooltha, Western Australia. Can. Min. 45,317-330. [abstr. Am. Min. 93,252(2008)]

Colchester, D. M., et al.: Gillardite, CuNiCl2(OH)6, a new mineral from the 132 North deposit, Widgiemooltha, Western Australia: Australian J. Mineralogy 13(1), 15-17 (2007).

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    Localities for Gillardite

    (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.
    Australia
     
    • Western Australia
      • Widgiemooltha
    		Australian J. Mineralogy 13(1), 15-17(2007)
    Mineral and/or Locality
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