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Comblainite

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About ComblainiteHide

Formula:
Ni4Co2(OH)12[CO3] · 3H2O
Hardness:
2
Crystal System:
Trigonal
Name:
Named in 1980 by Paul Piret and Michel 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 ComblainiteHide

Approved
5.DA.50

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

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

11 : Carbonates
14 : Carbonates of Co and Ni

Physical Properties of ComblainiteHide

Hardness:

Optical Data of ComblainiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.690 nε = 1.684
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of ComblainiteHide

Formula:
Ni4Co2(OH)12[CO3] · 3H2O
IMA Formula:
Ni4Co3+2(CO3)(OH)12 · 3H2O

Crystallography of ComblainiteHide

Crystal System:
Trigonal

Type Occurrence of ComblainiteHide

Place of Conservation of Type Material:
Royal Museum for Central Africa, Tervuren
National Museum of Natural History, Washington

Synonyms of ComblainiteHide

Other Language Names for ComblainiteHide

German:Comblainit
Spanish:Comblainita

Relationship of Comblainite to other SpeciesHide

Other Members of this group:
CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig.
CharmariteMn2+4Al2(OH)12[CO3] · 3H2O
ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
QuintiniteMg4Al2(OH)12[CO3] · 3H2OHex. 6 2 2 : P63 2 2
ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Uranophane1 photo of Comblainite associated with Uranophane on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl·6H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon.
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon.
5.DA.05UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon.
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex.
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon.
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14·7H2OTric.
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OHex.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig.
5.DA.40QuintiniteMg4Al2(OH)12[CO3] · 3H2OHex. 6 2 2 : P63 2 2
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45Pyroaurite-2HMg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
5.DA.50HydrotalciteMg6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
5.DA.50StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig.
5.DA.50UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig.

Related Minerals - Dana Grouping (8th Ed.)Hide

16b.6.3.1ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
16b.6.3.2TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig.
16b.6.3.4UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.14.1SpherocobaltiteCoCO3Trig. 3m (3 2/m) : R3c
11.14.2Kolwezite(Cu,Co)2(CO3)(OH)2Tric.
11.14.3NullaginiteNi2(CO3)(OH)2Mon.
11.14.4HellyeriteNiCO3 · 5.5H2OMon. 2/m : P2/m
11.14.5OtwayiteNi2(CO3)(OH)2 · H2OOrth.
11.14.6ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
11.14.7KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex.
11.14.8Glaukosphaerite(Cu,Ni)2(CO3)(OH)2Mon. 2/m : P21/b
11.14.9GaspéiteNi(CO3)Hex.
11.14.10ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
11.14.12SzymańskiiteHg16(Ni,Mg)6(CO3)12(OH)12(H3O)8•3H2OHex.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for ComblainiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Piret, P., Deliens, M. (1980) La comblainite, (Ni2+x, Co3+1-x)(OH)2(CO3)(1-x)/2·yH2O, nouveau minéral du groupe de la pyroaurite. Bulletin de Minéralogie: 103: 113-117.
Fleischer, M., Cabri, L.J., Chao, G.Y., Pabst, A. (1980) New mineral names. American Mineralogist: 65: 1065-1070.
Mills, S.J., Christy, A.G., Genin, J.-M. R., Kameda, T., Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine: 76(5): 1289-1336.
Barton, I.F., Yang, H., Barton, M.D. (2014) The mineralogy, geochemistry, and metallurgy of cobalt in the rhombohedral carbonates. The Canadian Mineralogist: 52: 653-669.
Hazen, R.M., Hystad, G., Golden, J.J., Hummer, D.R., Liu, C., Downs, R.T., Morrison, S.M., Ralph, J., Grew, E.S. (2017) Cobalt mineral ecology. American Mineralogist: 102: 108-116.

Internet Links for ComblainiteHide

Localities for ComblainiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Democratic Republic of the Congo (TL)
 
  • Katanga (Shaba)
    • Kambove District
      • Shinkolobwe
Piret, P. and Deliens, M. (1980) Comblainite, (Nix2+, Co1-x3+)(OH)2(CO3)(1-x/2)·yH2O, a new mineral of the pyroaurite group. Bulletin de la Société française de Minéralogie et de Cristallographie: 103: 113-117 (in French).; http://edit.africamuseum.be/geco_website/pdf/Shinkolobwe.pdf
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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