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Rorisite

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Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', 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', 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
Analyical Data:Water soluble.
Common Impurities:Mg
Relationship of Rorisite to other Species
Related to:
  • Matlockite Group
    • 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.35Calcioaravaipaite
    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
     
    2
    		[O|OH|Cl]
    3.DC.50Blixite
    Pb
     
    2
    		[(O,OH)
     
    2
    		|Cl]
    3.DC.55Pinalite
    Pb
     
    3
    		WO
     
    3
    		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,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 Rorisite
    Synonyms:
    IMA1989-015
    German names:
    Rorisit
    Russian names:
    Рорисит
    Spanish names:
    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
     		

    (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
    

    

    • Urals Region
    

      • Chelyabinsk Oblast'
    

        • Chelyabinsk coal basin
    

          • Kopeisk
    
    		ZVMO (1990) 119, n3, 73-76
    

    


    

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