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Korshunovskite

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Korshunovskoye (Korzunovskoe; Korzhunovska; Korshunovskiy) Iron mine, Zheleznogorsk, Irkutskaya Oblast', Prebaikalia (Pribaikal'e), Eastern-Siberian Region, Russia
© Thomas Witzke

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Formula:
Mg
 
2
Cl(OH)
 
3
 · 4H
 
2
O
System:TriclinicHardness:2
This page provides mineralogical data about Korshunovskite.

Classification of Korshunovskite

IMA status:Approved
Strunz 8th edition ID:3/D.01-10
Nickel-Strunz 10th (pending) edition ID:3.BD.15

3 : HALIDES
B : Simple halides, with H2O
D : Simple halides with H2O and additional OH
Dana 8th edition ID:10.1.5.1

10 : OXYHALIDES AND HYDROXYHALIDES
1 : A2(O,OH)3Xq
Hey's CIM Ref.:8.4.4

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 Korshunovskite

Type Locality:Korshunovskoye (Korzunovskoe; Korzhunovska; Korshunovskiy) Iron mine, Zheleznogorsk, Irkutskaya Oblast', Prebaikalia (Pribaikal'e), Eastern-Siberian Region, Russia
Year of Discovery:1982

Physical Properties of Korshunovskite

Hardness (Mohs):2

Crystallography of Korshunovskite

Crystal System:Triclinic
Cell Parameters:a = 8.64Å, b = 6.25Å, c = 7.42Å
α = 101.4°, β = 103.9°, γ = 72.7°
Ratio:a:b:c = 1.382 : 1 : 1.187
Unit Cell Volume:V 367.89 ų (Calculated from Unit Cell)

Optical Data of Korshunovskite

Type:Biaxial (-)
RI values: nα = 1.516 nβ = 1.538 nγ = 1.547
2V:Measured: 62° , Calculated: 64°
Maximum Birefringence:δ = 0.031

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:none

Chemical Properties of Korshunovskite

Formula:
Mg
 
2
Cl(OH)
 
3
 · 4H
 
2
O
Essential elements:Cl, H, Mg, O
All elements listed in formula:Cl, H, Mg, O

Relationship of Korshunovskite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.BD.05Cadwaladerite
AlCl(OH)
 
2
 · 4H
 
2
O
3.BD.10Lesukite
Al
 
2
Cl(OH)
 
5
 · 2H
 
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:

- +
8.4.1Sellaite
MgF
 
2
8.4.2Neighborite
NaMgF
 
3
8.4.3Bischofite
MgCl
 
2
 · 6H
 
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
8.4.11Rorisite
CaFCl
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 Korshunovskite

Synonyms:
IMA1980-083Korshunskite
Other Languages:
German:Korshunovskit
Korshunskit
Spanish:Korshunovskita
Korshunskita

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 Korshunovskite

Reference List:

- +
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 111: 324-329.

American Mineralogist (1983): 68: 643.

Acta Crystallographica: 6: 40-44.

Internet Links for Korshunovskite

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    • Localities for Korshunovskite

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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
     
    • Eastern-Siberian Region
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Zheleznogorsk
    		[ZVMO 111 (1982), 324; MinRec 32:500]; Mazurov et al (2007) Geology of Ore Deposits, 49, 271–284.
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