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Rorisite

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Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
© Thomas Witzke

Formula:
CaFCl
System:TetragonalColour:Colorless
Hardness:2
Name:From Latin, "roris," for "dew."


Matlockite Group.

Classification of Rorisite

IMA status:Approved
Strunz 8th edition ID:3/D.0-10
Nickel-Strunz 10th (pending) edition ID:3.DC.25

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
Dana 8th edition ID:9.2.11.2

9 : NORMAL HALIDES
2 : AX2
Hey's CIM Ref.:8.4.11

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 Rorisite

Type Locality:Coal mine No. 45, Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Year of Discovery:1990

Physical Properties of Rorisite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colorless
Hardness (Mohs):2

Crystallography of Rorisite

Crystal System:Tetragonal
Cell Parameters:a = 3.89Å, c = 6.81Å
Ratio:a:c = 1 : 1.751
Unit Cell Volume:V 103.05 ų (Calculated from Unit Cell)

Optical Data of Rorisite

Type:Uniaxial (-)
RI values: nω = 1.668 nε = 1.635
Maximum Birefringence:δ = 0.033

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

Chemical Properties of Rorisite

Formula:
CaFCl
Essential elements:Ca, Cl, F
All elements listed in formula:Ca, Cl, F
Analytical Data:Water soluble.
Common Impurities:Mg
Relationship of Rorisite to other Species
Member of Group:
Matlockite Group:
MXY
Related Minerals - Nickel-Strunz Grouping):

- + 
3.DC.05Laurionite
PbClOH
3.DC.05Paralaurionite
PbClOH
3.DC.10Fiedlerite
Pb
 
3
Cl
 
4
F(OH)·H
 
2
O
3.DC.15Penfieldite
Pb
 
2
[OH|Cl
 
3
]
3.DC.20Laurelite
Pb(F,Cl,OH)
 
2
3.DC.25Bismoclite
BiOCl
3.DC.25Daubréeite
BiO(OH,Cl)
3.DC.25Matlockite
PbFCl
3.DC.25Zavaritskite
BiOF
3.DC.25Zhangpeishanite
BaFCl
3.DC.30Nadorite
PbSb[O
 
2
|Cl]
3.DC.30Perite
PbBi[O
 
2
|Cl]
3.DC.35Aravaipaite
Pb
 
3
[F
 
3
|AlF
 
6
] · H
 
2
O
3.DC.37Calcioaravaipaite
PbCa
 
2
[(F,OH)
 
3
|AlF
 
6
] · H
 
2
O
3.DC.40Thorikosite
Pb
 
3
[OH|(SbO
 
3
,AsO
 
3
)|Cl
 
2
]
3.DC.45Mereheadite
Pb
 
47
O
 
24
(OH)
 
13
Cl
 
25
(BO
 
3
)
 
2
(CO3)
3.DC.50Blixite
Pb
 
2
[(O,OH)
 
2
|Cl]
3.DC.55Pinalite
Pb
 
3
WO
 
5
Cl
 
2
3.DC.60Symesite
Pb
 
10
[O
 
7
|SO
 
4
|Cl
 
4
] · H
 
2
O
3.DC.65Ecdemite
Pb
 
6
[As
 
2
O
 
7
|Cl
 
4
]
3.DC.65Heliophyllite
Pb
 
3
AsO
 
4-n
Cl
 
2n+1
3.DC.70Mendipite
Pb
 
3
[O
 
2
|Cl
 
2
]
3.DC.75Damaraite
Pb
 
3
[O
 
2
|OH|Cl]
3.DC.80Onoratoite
Sb
 
8
O
 
11
Cl
 
2
3.DC.85Cotunnite
PbCl
 
2
3.DC.90Pseudocotunnite
K
 
2
PbCl
 
4
3.DC.95Barstowite
Pb
 
4
[Cl
 
6
|CO
 
3
] · H
 
2
O
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
8.4.10Chlorocalcite
KCaCl
 
3
8.4.12Jarlite
Na(Sr,Na)
 
7
MgAl
 
6
F
 
32
(OH,H
 
2
O)
 
2
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 Rorisite
Synonyms:
IMA1989-015
Other Languages:
German:Rorisit
Russian:Рорисит
Spanish:Rorisita
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 Rorisite
Reference List:New Minerals (1997), New Minerals 1990-1994.



Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 119(3): 73-76.



American Mineralogist (1991): 76: 1731.


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    Localities for Rorisite
    






    


    

    
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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.

    Russia
     
    

    • Northern Caucasus Region
    

      • Kabardino-Balkarian Republic
    

        • Baksan Valley
    
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    

    • Urals Region
    

      • Southern Urals
    

        • Chelyabinsk Oblast'
    

          • Chelyabinsk coal basin
    

            • Kopeisk
    
    		ZVMO (1990) 119, n3, 73-76; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    

    


    

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