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Chlorocalcite

Formula:
KCaCl
 
3
System:OrthorhombicColour:White, violet tinged
Hardness:2½ - 3
Name:In allusion to the composition, containing both CHLORine and CALCium.
This page provides mineralogical data about Chlorocalcite.

Classification of Chlorocalcite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/A.09-20
Nickel-Strunz 10th (pending) edition ID:3.AA.40

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
Dana 8th edition ID:11.1.3.1

11 : HALIDE COMPLEXES
1 : AmBX3
Hey's CIM Ref.:8.4.10

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
4 : Halides of the alkaline earths and Mg
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Type Occurrence of Chlorocalcite

Type Locality:Mt. Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Year of Discovery:1872
Geological Setting of type material:Active volcanic fumaroles.
Associated Minerals at type locality:
SylviteHematiteHalite

Physical Properties of Chlorocalcite

Diaphaneity (Transparency):Transparent
Colour:White, violet tinged
Hardness (Mohs):2½ - 3
Cleavage:Distinct/Good
Cube-like in two directions, one better than the other.

Crystallography of Chlorocalcite

Crystal System:Orthorhombic
Cell Parameters:a = 7.35Å, b = 10.44Å, c = 7.25Å
Ratio:a:b:c = 0.704 : 1 : 0.694
Unit Cell Volume:V 556.32 ų (Calculated from Unit Cell)
Morphology:Cube-like crystals, with octahedral or dodecahedral-like truncations at times. Prismatic with {100}, {010}, and {011} or tabular with {001}, {110}, and {100}.

Optical Data of Chlorocalcite

Type:Biaxial
Dispersion:not discernible

Chemical Properties of Chlorocalcite

Formula:
KCaCl
 
3
Essential elements:Ca, Cl, K
All elements listed in formula:Ca, Cl, K
Analyical Data:Deliquescent.
Relationship of Chlorocalcite to other Species
Related Minerals - Nickel-Strunz Grouping):
3.AA.05Marshite
CuI
3.AA.05Miersite
(Ag,Cu)I
3.AA.05Nantokite
CuCl
3.AA.10Iodargyrite
AgI
3.AA.10Tocornalite
(Ag,Hg)I
3.AA.15Bromargyrite
AgBr
3.AA.15Chlorargyrite
AgCl
3.AA.20Carobbiite
KF
3.AA.20Griceite
LiF
3.AA.20Halite
NaCl
3.AA.20Sylvite
KCl
3.AA.20Villiaumite
NaF
3.AA.25Salammoniac
NH
 
4
Cl
3.AA.25Lafossaite
Tl(Cl,Br)
3.AA.30Calomel
Hg
 
2
Cl
 
2
3.AA.30Kuzminite
Hg
 
2
(Br,Cl)
 
2
3.AA.30Moschelite
Hg
 
2
I
 
2
3.AA.35Neighborite
NaMgF
 
3
3.AA.45Kolarite
PbTeCl
 
2
3.AA.50Radhakrishnaite
PbTe
 
3
(Cl,S)
 
2
3.AA.55Challacolloite
KPb
 
2
Cl
 
5
3.AA.55Hephaistosite
TlPb
 
2
Cl
 
5
Related Minerals - Hey's Index Grouping:
8.4.1Sellaite
MgF
 
2
8.4.2Neighborite
NaMgF
 
3
8.4.3Bischofite
MgCl
 
2
 · 6H
 
2
O
8.4.4Korshunovskite
Mg
 
2
[(OH)
 
3
|Cl] · 4H
 
2
O
8.4.5Carnallite
KMgCl
 
3
·6H
 
2
O
8.4.6Tachyhydrite
CaMg
 
2
Cl
 
6
·12H
 
2
O
8.4.7Fluorite
CaF
 
2
8.4.8Sinjarite
CaCl
 
2
·2H
 
2
O
8.4.9Antarcticite
CaCl
 
2
 · 6H
 
2
O
8.4.11Rorisite
CaFCl
8.4.12Jarlite
Na(Sr,Ca)
 
3
Al
 
3
F
 
16
8.4.13Calcjarlite
Na(Ca,Sr)
 
3
Al
 
3
(OH)
 
2
F
 
14
8.4.14Tikhonenkovite
Sr[AlF
 
4
(OH)(H
 
2
O)]
8.4.15Acuminite
Sr[AlF
 
4
(OH)(H
 
2
O)]
8.4.16Frankdicksonite
BaF
 
2
8.4.17Usovite
Ba
 
2
CaMgAl
 
2
F
 
14
8.4.18Bøgvadite
Na
 
2
SrBa
 
2
[Al
 
4
F
 
20
]
Other Names for Chlorocalcite
Synonyms:
BaeumleriteBäumleriteClorocalcite
German names:
BaeumleritBäumleritChlorocalcitClorocalcit
Italian names:
Idroclorato di calce in piccola dose
Spanish names:
BaeumleritaBäumleritaChlorocalcitaClorocalcita
Other Information
Fluorescence in UV light:None.
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 Chlorocalcite
Reference List:Monticelli, T. and Covelli, N. (1823) Storia di fenom. Del Vesuvio avven. Negli anni, 1821, etc., Naples: 183.



Beudant, F.S. (1832), Trailé élémentaire de Minéralogie, second edition, 2 volumes: 2: 512.



Scacchi (1872) Reale accademia delle scienze fisische e matematiche, Naples, Rend., October 12, 1872).



Scacchi (1873) Reale accademia delle scienze fisische e matematiche, Naples, Mem.: Dec. 13, 1873.



Lacroix (1907) Bulletin de la Société française de Minéralogie: 30: 255.



Zambonini, Ferruccio (1910) Mineralogia Vesuviana.  368 pp., Naples: 50. 



Renner (1912) Centralblatt für Mineralogie, Geologie und Paleontologie, Stuttgart: 106 (as Baeumlerite).



Zambonini, Ferruccio (1912) Mineralogia Vesuviana, appendix, 51 pp.: 3.



Zambonini, Ferruccio (1935) Mineralogia Vesuviana, second edition with Quercigh, 463 pp., Naples: 99.



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: 91-92.


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    Localities for Chlorocalcite
    
	






    


    

    
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    (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.

    Germany
     
    

    • Lower Saxony
    

      • Peine
    
    		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: 91.
    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: 91.
    

    


    

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