Mindat Logo

Chloraluminite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
AlCl
 
3
· 6H
 
2
O
System:TrigonalColour:Colourless to white; ...
Name:In allusion to the composition, containing CHLORine and ALUMINium.


A deliquescent, hydrated chloride mineral.

Classification of Chloraluminite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/A.13-20
Nickel-Strunz 10th (pending) edition ID:3.BC.05

3 : HALIDES
B : Simple halides, with H2O
C : M:X = 1:3
Dana 8th edition ID:9.3.3.1

9 : NORMAL HALIDES
3 : AX3
Hey's CIM Ref.:8.6.2

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
mindat.org URL:http://www.mindat.org/min-1012.html
Please feel free to link to this page.

Type Occurrence of Chloraluminite

Type Locality:Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Year of Discovery:1873
Associated Minerals at type locality:
MolysiteChloromagnesite

Physical Properties of Chloraluminite

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

Crystallography of Chloraluminite

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

Optical Data of Chloraluminite

Type:Uniaxial (-)
RI values: nω = 1.560 nε = 1.507
Maximum Birefringence:δ = 0.053

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

Chemical Properties of Chloraluminite

Formula:
AlCl
 
3
· 6H
 
2
O
Simplified for copy/paste:AlCl3·6H2O
Essential elements:Al, Cl, H, O
All elements listed in formula:Al, Cl, H, O

Relationship of Chloraluminite to other Species

Related Minerals - Hey's Index Grouping:

- +
8.6.1Zharchikhite
AlF(OH)
 
2
8.6.3Cadwaladerite
AlCl(OH)
 
2
· 4H
 
2
O
8.6.4Cryolithionite
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
8.6.5Cryolite
Na
 
3
[AlF
 
6
]
8.6.6Chiolite
Na
 
5
Al
 
3
F
 
14
8.6.7Elpasolite
NaK
 
2
[AlF
 
6
]
8.6.8Weberite
Na
 
2
Mg[AlF
 
6
]F
8.6.9Ralstonite
NaMg[Al(F,OH)
 
6
] · H
 
2
O
8.6.10Koenenite
Na
 
4
Mg
 
9
Al
 
4
Cl
 
12
(OH)
 
22
8.6.11 Chlor-manasseite
Mg
 
x
Al(OH)
 
2x+2
Cl · (x-0.8)H
 
2
O x about 1.75
8.6.12Gearksutite
Ca[Al(F,OH)
 
5
(H
 
2
O)]
8.6.13Prosopite
CaAl
 
2
(F,OH)
 
8
8.6.14Yaroslavite
Ca
 
3
Al
 
2
F
 
10
(OH)
 
2
· H
 
2
O
8.6.15Carlhintzeite
Ca
 
2
[AlF
 
6
]F · H
 
2
O
8.6.16Colquiriite
CaLi[AlF
 
6
]
8.6.17Thomsenolite
NaCa[AlF
 
6
] · H
 
2
O
8.6.18Pachnolite
NaCa[AlF
 
6
] · H
 
2
O
8.6.19Zirklerite
(Fe,Mg,Ca)
 
9
Al
 
4
Cl
 
18
(OH)
 
12
· 14H
 
2
O (?)

Other Names for Chloraluminite

Synonyms:
Chloralluminite
Other Languages:
German:Chloralluminit
Chloraluminit
Italian:Chloralluminio
Russian:Хлоралюминит
Spanish:Cloraluminita

Other Information

Thermal Behaviour:Decomposes at a low tempeature.
Other Information:Deliquescent. Very soluble in water.
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 Chloraluminite

Reference List:

- +
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 Chloraluminite

Search Engines:
  • Look for Chloraluminite on Google
  • Look for Chloraluminite images on Google
  • External Links:
  • Look for Chloraluminite on Webmineral
  • Look for Chloraluminite on Athena Mineralogy
  • Look for Chloraluminite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Fabre Minerals - search for Chloraluminite specimens
  • High-end worldwide specimens & outstanding customer service
  • SpiriferMinerals.com - high quality low prices
  • Wilensky Fine Minerals
  • Buy from McDougall Minerals
  • Buy rare minerals from Excalibur Minerals
  • Lapis Mineral Magazin
  • rare and unusual minerals mainly crystallized
  • Search for Chloraluminite on Well-Arranged Molecules
  • Find Chloraluminite on www.crystalclassics.co.uk
  • Buy RARE Minerals from Rocks of Africa
  • Chloraluminite specimens for sale - minfind.com
  • Jobs:
  • Mining & Geology Jobs
  • Localities for Chloraluminite

    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.
    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
     
    • Alsace
      • Bas-Rhin
        • Obernai
    Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    Italy
     
    • 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.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands 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.
    Current server date and time: January 5, 2014 08:21:32
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds