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Carobbiite

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Formula:
KF
System:IsometricColour:Colourless
Hardness:2 - 2½
This page provides mineralogical data about Carobbiite.

Classification of Carobbiite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/A.02-20
Nickel-Strunz 10th (pending) edition ID:3.AA.20

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
Dana 8th edition ID:9.1.1.4

9 : NORMAL HALIDES
1 : AX
Hey's CIM Ref.:8.1.5

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
1 : Halides of the alkali metals and ammonium
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Type Occurrence of Carobbiite

Type Locality:Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Year of Discovery:1956
Associated Minerals at type locality:
MercalliteMiseniteHieratite

Physical Properties of Carobbiite

Colour:Colourless
Hardness (Mohs):2 - 2½
Cleavage:Distinct/Good
On {001}.
Density (measured):2.505 g/cm3
Density (calculated):2.528 g/cm3

Crystallography of Carobbiite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Cell Parameters:a = 5.34Å
Unit Cell Volume:V 152.27 ų (Calculated from Unit Cell)

Optical Data of Carobbiite

Type:Isotropic

Chemical Properties of Carobbiite

Formula:
KF
Essential elements:F, K
All elements listed in formula:F, K
Analytical Data:Easily soluble in water.
Relationship of Carobbiite to other Species
Related Minerals - Nickel-Strunz Grouping):

- + 
3.AA.05Marshite
CuI
3.AA.05Miersite
(Ag,Cu)I
3.AA.05Nantokite
CuCl
3.AA.05UM1999-11:I:CuS
Cu(I,S)
3.AA.10Iodargyrite
AgI
3.AA.10Tocornalite
(Ag,Hg)I
3.AA.15Bromargyrite
AgBr
3.AA.15Chlorargyrite
AgCl
3.AA.20Griceite
LiF
3.AA.20Halite
NaCl
3.AA.20Sylvite
KCl
3.AA.20Villiaumite
NaF
3.AA.25Salammoniac
NH
 
4
Cl
3.AA.25UM1998-03-Cl:Tl
TlCl
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.40Chlorocalcite
KCaCl
 
3
3.AA.45Kolarite
PbTeCl
 
2
3.AA.50Radhakrishnaite
PbTe
 
3
(Cl,S)
 
2
3.AA.55Challacolloite
KPb
 
2
Cl
 
5
3.AA.60Hephaistosite
TlPb
 
2
Cl
 
5
Related Minerals - Hey's Index Grouping:

- + 
8.1.1Griceite
LiF
8.1.2Villiaumite
NaF
8.1.3Halite
NaCl
8.1.4Hydrohalite
NaCl · 2H
 
2
O
8.1.6Sylvite
KCl
8.1.7Salammoniac
NH
 
4
Cl
Other Names for Carobbiite
Synonyms:
Potassium Fluoride
Other Languages:
German:Carobbiit
Russian:Кароббиит
Spanish:Carobbiita
Other Information
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 Carobbiite
Reference List:

- + 
Carobbi (1936) Att. acc. sc. Lett. Arti., Modena: (5): 1: 33.



Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 28 (as Potassium Fluoride).



American Mineralogist (1957): 42: 117.


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    • Localities for Carobbiite
    






    


    

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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.

    Italy
     
    

    • Campania
    

      • Naples Province
    

        • Somma-Vesuvius Complex
    
    		[Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI] [Rend.Soc.Min.Ital.(1956) 12, 212-213)  [Lapis 1994:5 p.13-23,58]
    Japan
     
    

    • Hokkaido
    

      • Iburi Province
    

    

    


    

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