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Gillardite

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132 North Mine, Widgiemooltha, Coolgardie Shire, Western Australia, Australia
© JM. Johannet

Show Gillardite Photos (27)



Formula:
Cu
 
3
Ni(OH)
 
6
Cl
 
2
System:Trigonal
Member of:Atacamite Group
Isostructural with:Herbertsmithite


Atacamite Group.
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, Coolgardie Shire, 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)
1.820 (13)

Chemical Properties of Gillardite

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

Relationship of Gillardite to other Species

Member of:Atacamite Group
Other Members of Group:

- +
Anatacamite
Cu
 
2
Cl(OH)
 
3
Atacamite
Cu
 
2
(OH)
 
3
Cl
Botallackite
Cu
 
2
(OH)
 
3
Cl
Clinoatacamite
Cu
 
2
(OH)
 
3
Cl
Haydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
Herbertsmithite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
Kapellasite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
Paratacamite
Cu
 
3
(Cu,Zn)(OH)
 
6
Cl
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
3.DA.05Melanothallite
Cu
 
2
Cl
 
2
O
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)
 
6
Cl
 
2
3.DA.10bBelloite
Cu(OH)Cl
3.DA.10cHerbertsmithite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
3.DA.10cKapellasite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
3.DA.10cHaydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
3.DA.10dAnatacamite
Cu
 
2
Cl(OH)
 
3
3.DA.15Claringbullite
Cu
 
4
(OH)
 
7
Cl · nH
 
2
O
3.DA.15Barlowite
Cu
 
4
BrF(OH)
 
6
3.DA.20Simonkolleite
Zn
 
5
Cl
 
2
(OH)
 
8
 · H
 
2
O
3.DA.25Buttgenbachite
Cu
 
19
(NO
 
3
)
 
2
(OH)
 
32
Cl
 
4
 · 2H
 
2
O
3.DA.25Connellite
Cu
 
19
(SO
 
4
)(OH)
 
32
Cl
 
4
 · 3H
 
2
O
3.DA.30Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
3.DA.35Ponomarevite
K
 
4
Cu
 
4
Cl
 
10
O
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
Cl
 
2
(OH)
 
8
 · 2H
 
2
O
3.DA.55Avdoninite
K
 
2
Cu
 
5
(OH)
 
4
Cl
 
8
 · H
 
2
O
3.DA.60Droninoite
Ni
 
6
Fe
32+
(
OH)
 
16
Cl
 
2
 · 4H
 
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. (2007): The structure of gillardite, the Ni-analog of herbertsmithite, from Widgiemooltha, Western Australia. Can. Mineral. 45, 317-330. [abstr. Am. Min. 93, 252 (2008)]

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

Internet Links for Gillardite

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    • Localities for Gillardite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (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
      • Coolgardie Shire
        • Widgiemooltha
    		Australian J. Mineralogy 13(1), 15-17(2007)
    Germany
     
    • Saxony-Anhalt
      • Stassfurt Potash Deposit
        • Bernburg
    		Witzke, T. (2012): Gillardit, Cu3Ni(OH)6Cl2, und Avdoninit, K2Cu5Cl8(OH)4 • H2O, zwei Neufunde von Bernburg, Sachsen-Anhalt. Aufschluss 63, 209-211.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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