Mindat Logo

Cadwaladerite

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



Formula:
AlCl(OH)
 
2
· 4H
 
2
O
Colour:YellowLustre:Vitreous
Name:For Charles Meigs Biddle Cadwalader (1885-1959) President of the Academy of Natural Sciences, Philadelphia, Pennsylvania, USA.
This page provides mineralogical data about Cadwaladerite.

Classification of Cadwaladerite

IMA status:Questionable/Doubtful 1941
Explanation of status:Inadequate data
Strunz 8th edition ID:3/A.13-10
Nickel-Strunz 10th (pending) edition ID:3.BD.05

3 : HALIDES
B : Simple halides, with H2O
D : Simple halides with H2O and additional OH
Dana 8th edition ID:10.5.1.1

10 : OXYHALIDES AND HYDROXYHALIDES
5 : Am(O,OH)pXq
Hey's CIM Ref.:8.6.3

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
mindat.org URL:http://www.mindat.org/min-845.html
Please feel free to link to this page.

Type Occurrence of Cadwaladerite

Type Locality:Cerros Pintados ("Cerro Pintados"), Pampa del Tamarugal, El Tamarugal Province, Tarapac√° Region, Chile
Year of Discovery:1941
Associated Minerals at type locality:
Halite

Physical Properties of Cadwaladerite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Yellow
Fracture:Conchoidal
Density (measured):1.66 g/cm3

Crystallography of Cadwaladerite

Morphology:Amorphous grains and small masses.

Optical Data of Cadwaladerite

Type:Isotropic

Chemical Properties of Cadwaladerite

Formula:
AlCl(OH)
 
2
· 4H
 
2
O
Simplified for copy/paste:AlCl(OH)2·4H2O
Essential elements:Al, Cl, H, O
All elements listed in formula:Al, Cl, H, O

Relationship of Cadwaladerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.BD.10Lesukite
Al
 
2
Cl(OH)
 
5
· 2H
 
2
O
3.BD.15Korshunovskite
Mg
 
2
Cl(OH)
 
3
· 4H
 
2
O
3.BD.20Nepskoeite
Mg
 
4
Cl(OH)
 
7
· 6H
 
2
O
3.BD.25Koenenite
Na
 
4
Mg
 
9
Al
 
4
Cl
 
12
(OH)
 
22
Related Minerals - Hey's Index Grouping:

- +
8.6.1Zharchikhite
AlF(OH)
 
2
8.6.2Chloraluminite
AlCl
 
3
· 6H
 
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 Cadwaladerite

Other Languages:
German:Cadwaladerit
Spanish:Cadwaladerita

Other Information

Other Information:Weakly hygroscopic.
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 Cadwaladerite

Reference List:

- +
Gordon (1941) Academy of Natural Science of Philadelphia, Notulae Naturae, no. 80, April, 1941.

American Mineralogist (1942): 27: 144.

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: 77.

Internet Links for Cadwaladerite

Search Engines:
  • Look for Cadwaladerite on Google
  • Look for Cadwaladerite images on Google
  • External Links:
  • Cadwaladerite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Cadwaladerite specimens for sale - minfind.com
  • Buy from Dave Bunk Minerals
  • rare and unusual minerals mainly crystallized
  • Buy from David K Joyce minerals
  • High-end worldwide specimens & outstanding customer service
  • The Arkenstone - Fine Minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy rare minerals from Excalibur Minerals
  • Find Cadwaladerite on www.crystalclassics.co.uk
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Fine and rare minerals from mintreasure.com
  • Localities for Cadwaladerite

    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.
    Chile
     
    • Tarapac√° Region
      • El Tamarugal Province
        • Pampa del Tamarugal
    Notulae Naturae, Acad.Nat.Sci., Philadelphia (1941) no. 80, 4 pp.; 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: 77.
    Iran
     
    • Yazd Province
      • Saghand (Sagand; Saqand)
    Vincent Bourgoin
    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: August 25, 2014 09:13:05
    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