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Comblainite

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Formula:
Ni
 
4
Co
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
System:TrigonalHardness:2
Member of:Quintinite Group > Hydrotalcite Supergroup
Name:Named in 1980 by Paul Piret and Michelle Deliens in honor of Gordon Comblain [August 11, 1920 Hackney, London, England, UK - 1996 Brussels, Belgium]. Comblain, a Belgian citizen, worked as a mining engineer from 1946 till 1965 for the Société des Mines d'Etain du Ruanda-Urundi and did mining and exploratory missions in Central Africa. From 1965 until his retirement in 1985, he worked as a laboratory technician for the department of mineralogy of the Koninklijk Museum voor Midden-Afrika, Tervuren, Belgium.
This page provides mineralogical data about Comblainite.

Classification of Comblainite

IMA status:Approved
Strunz 8th edition ID:5/E.03-70
Nickel-Strunz 10th (pending) edition ID:5.DA.50

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th edition ID:16b.6.3.3

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
Hey's CIM Ref.:11.14.11

11 : Carbonates
14 : Carbonates of Co and Ni
mindat.org URL:http://www.mindat.org/min-1116.html
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Type Occurrence of Comblainite

Type Locality:Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Year of Discovery:1980

Physical Properties of Comblainite

Hardness (Mohs):2

Crystallography of Comblainite

Crystal System:Trigonal

Optical Data of Comblainite

Type:Uniaxial (-)
RI values: nω = 1.690 nε = 1.684
Maximum Birefringence:δ = 0.006

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Comblainite

Formula:
Ni
 
4
Co
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
Simplified for copy/paste:Ni4Co2(OH)12[CO3]·3H2O
Essential elements:C, Co, H, Ni, O
All elements listed in formula:C, Co, H, Ni, O

Relationship of Comblainite to other Species

Member of:Quintinite Group > Hydrotalcite Supergroup
Other Members of Group:

- +
Caresite
Fe
2+
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
Charmarite
Mn
2+
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
Chlormagaluminite
Mg
 
4
Al
 
2
(OH)
 
12
Cl
 
2
· 3H
 
2
O
Quintinite
Mg
 
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
Zaccagnaite
Zn
 
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
5.DA.05Dypingite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5H
 
2
O
5.DA.05Giorgiosite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5-6H
 
2
O
5.DA.05Hydromagnesite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 4H
 
2
O
5.DA.05Widgiemoolthalite
Ni
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5H
 
2
O
5.DA.05UM1986-10-CO:ClHMgMnZn
Mg
 
5
(Zn,Mn)
 
3
(CO
 
3
)
 
2
(OH,Cl)
 
12
· H
 
2
O
5.DA.05UM1987-01-CO:HMgS
Mg
 
4
(CO
 
3
)
 
2
(OH)
 
2
· 6H
 
2
O ?
5.DA.10Artinite
Mg
 
2
(CO
 
3
)(OH)
 
2
· 3H
 
2
O
5.DA.10Indigirite
Mg
 
2
Al
 
2
(CO
 
3
)
 
4
(OH)
 
2
· 15H
 
2
O
5.DA.10Chlorartinite
Mg
 
2
(CO
 
3
)(OH)Cl · 2H
 
2
O
5.DA.15Otwayite
Ni
 
2
(CO
 
3
)(OH)
 
2
· H
 
2
O
5.DA.15Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
· 4H
 
2
O
5.DA.20Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
· 3H
 
2
O
5.DA.25Callaghanite
Cu
 
2
Mg
 
2
(CO
 
3
)(OH)
 
6
· 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
(CO
 
3
)(OH)
 
4
· 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
· nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(CO
 
3
)(OH)
 
13
· 5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.45Stichtite-2H
Mg
 
6
(Cr,Al)
 
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
(CO
 
3
)(OH)
 
13
· 4H
 
2
O
5.DA.45Chlormagaluminite
Mg
 
4
Al
 
2
(OH)
 
12
Cl
 
2
· 3H
 
2
O
5.DA.45Hydrotalcite-2H
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O
5.DA.45Pyroaurite-2H
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O
5.DA.45Zaccagnaite
Zn
 
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
(OH)
 
16
(CO
 
3
) · 4H
 
2
O
5.DA.50Stichtite
Mg
 
6
Cr
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Takovite
Ni
 
6
Al
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50UM1998-10-CO:CoHNi
Co
 
6
Fe
 
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O ?
5.DA.55Coalingite
Mg
 
10
Fe
3+
2
(OH)
 
24
[CO
 
3
] · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.14.1Spherocobaltite
CoCO
 
3
11.14.2Kolwezite
(Cu,Co)
 
2
(CO
 
3
)(OH)
 
2
11.14.3Nullaginite
Ni
 
2
(CO
 
3
)(OH)
 
2
11.14.4Hellyerite
NiCO
 
3
· 6H
 
2
O
11.14.5Otwayite
Ni
 
2
(CO
 
3
)(OH)
 
2
· H
 
2
O
11.14.6Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
· 4H
 
2
O
11.14.7Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
· 3H
 
2
O
11.14.8Glaukosphaerite
(Cu,Ni)
 
2
(CO
 
3
)(OH)
 
2
11.14.9Gaspéite
(Ni,Mg,Fe)CO
 
3
11.14.10Reevesite
Ni
 
6
Fe
3+
2
(OH)
 
16
(CO
 
3
) · 4H
 
2
O
11.14.12Szymańskiite
Hg
 
16
(Ni,Mg)
 
6
(CO
 
3
)
 
12
(OH)
 
12
· 11H
 
2
O

Other Names for Comblainite

Synonyms:
IMA1978-009
Other Languages:
German:Comblainit
Spanish:Comblainita

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 Comblainite

Reference List:

- +
American Mineralogist: 65: 1065-1066.

Bulletin de Mineralogie: 103: 113-117.

Mills, S. J., A. G. Christy, J.-M. R. Genin, T. Kameda, and F. Colombo (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine 76(5), 1289-1336.

Internet Links for Comblainite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Comblainite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Comblainite

    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.
    (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.
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Shinkolobwe
    Bulletin de Minéralogie 103 (1980), 113.
    Germany
     
    • Lower Saxony
      • Harz
        • Lautenthal
    No reference listed
    Schnorrer-Köhler, G. (1988): Mineralogische Notizen IV. Der Aufschluss, 39, 153-168.
    Switzerland
     
    • Wallis (Valais)
      • Anniviers Valley
        • Ayer
    Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
    Mineral and/or Locality  
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