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Chloraluminite

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Formula:
AlCl3 · 6H2O
Colour:
Colourless to white; yellowish; colourless in transmitted light.
Crystal System:
Trigonal
Name:
In allusion to the composition, containing CHLORine and ALUMINium.
A deliquescent, hydrated chloride mineral.


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Classification of ChloraluminiteHide

Approved, 'Grandfathered' (first described prior to 1959)
3.BC.05

3 : HALIDES
B : Simple halides, with H2O
C : M:X = 1:3
9.3.3.1

9 : NORMAL HALIDES
3 : AX3
8.6.2

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al

Physical Properties of ChloraluminiteHide

Colour:
Colourless to white; yellowish; colourless in transmitted light.

Optical Data of ChloraluminiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.560 nε = 1.507
Max Birefringence:
δ = 0.053
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of ChloraluminiteHide

Formula:
AlCl3 · 6H2O

Crystallography of ChloraluminiteHide

Crystal System:
Trigonal
Cell Parameters:
a = 11.83 Å, c = 11.91 Å
Ratio:
a:c = 1 : 1.007
Unit Cell V:
1,443.48 ų (Calculated from Unit Cell)
Morphology:
Occurs in crystalline crusts and stalactites. Rhombohedral (natural crystals); prismatic [0001] (artificial crystals).

Type Occurrence of ChloraluminiteHide

Synonyms of ChloraluminiteHide

Other Language Names for ChloraluminiteHide

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.6.1ZharchikhiteAlF(OH)2Mon.
8.6.3CadwaladeriteAlCl(OH)2 · 4H2OAmor.
8.6.4CryolithioniteNa3Li3[AlF6]2Iso. m3m (4/m 3 2/m) : Ia3d
8.6.5CryoliteNa2NaAlF6Mon. 2/m
8.6.6ChioliteNa5Al3F14Tet. 4/mmm (4/m 2/m 2/m) : P4/mnc
8.6.7ElpasoliteK2NaAlF6Iso. m3 (2/m 3) : Pa3
8.6.8WeberiteNa2Mg[AlF6]FOrth. mmm (2/m 2/m 2/m) : Immm
8.6.9Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O Iso. m3m (4/m 3 2/m) : Fd3m
8.6.10KoeneniteNa4Mg9Al4Cl12(OH)22Trig. 3m (3 2/m) : R3m
8.6.11 Chlor-manasseiteMgxAl(OH)2x+2Cl · (x-0.8)H2O
x about 1.75
8.6.12GearksutiteCa[Al(F,OH)5(H2O)]Tric. 1 : P1
8.6.13ProsopiteCaAl2(F,OH)8Mon. 2/m : B2/b
8.6.14YaroslaviteCa3Al2F10(OH)2 · H2OOrth.
8.6.15CarlhintzeiteCa2[AlF6]F · H2OTric.
8.6.16ColquiriiteCaLi[AlF6]Trig.
8.6.17ThomsenoliteNaCa[AlF6] · H2OMon. 2/m : P21/b
8.6.18PachnoliteNaCa[AlF6] · H2OMon. 2/m
8.6.19Zirklerite(Fe,Mg,Ca)9Al4Cl18(OH)12 · 14H2O (?)Trig.

Other InformationHide

Thermal Behaviour:
Decomposes at a low tempeature.
Notes:
Deliquescent. Very soluble in water.
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 ChloraluminiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Scacchi, A. (1874) Reale accademia delle scienze fisische e matematiche, Naples, Att.: 6, no. 9: 43, 68 (as Chloralluminio).
vom Rath (1877) Verh. naturhist. Ver. Rheinland: 34: 152.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York.: 165.
Gill, In: Dennis (1895) Zeitschrift für anorganische und allgemeine Chemie, Hamburg, Leipzig: 9: 340.
Lacroix (1907) Bulletin de la Société française de Minéralogie: 30: 254.
Takahashi, et al (1928) Journal of the Geological Society of Tokyo: 35: 439.
Andress and Carpenter (1934) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 87: 446.
Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 51.
Acta Crystallographica: B24:954.
Acta Crystallographica: B27: 1069-1070.

Internet Links for ChloraluminiteHide

Localities for ChloraluminiteHide

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.
Antarctica
 
  • Western Antarctica
    • Antarctic Peninsula
      • South Shetland Islands
Viramonte, J.G., Sureda, R.J., Bossi, G.E., Fourcade, N.H., Omarini, R.H., Geochemical and mineralogical study of the high temperature fumaroles from Decepcion Island, South Shetland, Antarctica. Inst. Assoc. of Volc. and chemistry of the erath interior. Symposium Andean and Antarctic Volcanology Problems. Chile (1974).
France
 
  • Grand Est
    • Bas-Rhin
      • Obernai
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
Italy (TL)
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 50.
Poland
 
  • Upper Silesia (Śląskie)
    • Upper Silesian Coal Basin
      • Rybnik Coal Area
        • Radlin
Łukasz Kruszewski (2012) Unique chloride assemblage of exhalative origin from burning coal-mining dump in Radlin (Rybnik Coal Area, S Poland). Mineralogical Society of Poland Special Papers 40
Mineral and/or Locality  
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