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Clinokurchatovite

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Big Photo

Sayak-IV deposit, Sayak, Balkhash (Balqash; Karatas; Prebalkhashie) Region, Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan
© 2008, JGW




Formula:
Ca(Mg,Fe
2+
 
,Mn
2+
 
)[B
 
2
O
 
5
]
System:Monoclinic
Name:In allusion to its crystallographic structure, crystallizing in the monoclinic system, and after Igor Vasil’evich Kurchatov (1903–1960), Russian physicist, Institute of Nuclear Energy, Moscow, Russia, and its relationship to Kurchatovite.
This page provides mineralogical data about Clinokurchatovite.

Classification of Clinokurchatovite

IMA status:Approved
Strunz 8th edition ID:5/H.01-20
Nickel-Strunz 10th (pending) edition ID:6.BA.10

6 : BORATES
B : Diborates
A : Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.
Dana 8th edition ID:24.4.3.1

24 : ANHYDROUS BORATES
4 : A2[X2O5]
Hey's CIM Ref.:9.7.7

9 : Borates
7 : Borates of Mn
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Type Occurrence of Clinokurchatovite

Type Locality:Sayak-IV deposit, Sayak, Balkhash (Balqash; Karatas; Prebalkhashie) Region, Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan
Year of Discovery:1983

Crystallography of Clinokurchatovite

Crystal System:Monoclinic
Cell Parameters:a = 12.19Å, b = 10.95Å, c = 5.59Å
β = 102°
Ratio:a:b:c = 1.113 : 1 : 0.511
Unit Cell Volume:V 729.85 ų (Calculated from Unit Cell)

Optical Data of Clinokurchatovite

Type:Biaxial (-)
RI values: nα = 1.642 - 1.644 nβ = 1.674 - 1.675 nγ = 1.699 - 1.704
2V:Measured: 82° to 88°, Calculated: 80° to 86°
Maximum Birefringence:δ = 0.057 - 0.060

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

Chemical Properties of Clinokurchatovite

Formula:
Ca(Mg,Fe
2+
 
,Mn
2+
 
)[B
 
2
O
 
5
]
Essential elements:B, Ca, Mg, O
All elements listed in formula:B, Ca, Fe, Mg, Mn, O

Relationship of Clinokurchatovite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.BA.05Suanite
Mg
 
2
[B
 
2
O
 
5
]
6.BA.10Kurchatovite
Ca(Mg,Mn
2+
 
)[B
 
2
O
 
5
]
6.BA.15Sussexite
(Mn
2+
 
,Mg)
 
2
[(OH)(B
 
2
O
 
4
(OH))]
6.BA.15Szaibélyite
Mg
 
2
[(OH)(B
 
2
O
 
4
(OH))]
6.BA.20Wiserite
(Mn,Mg)
 
14
[Cl|(OH)
 
8
|(Si,Mg)(O,OH)
 
4
|(B
 
2
O
 
5
)
 
4
]
Related Minerals - Hey's Index Grouping:

- +
9.7.1Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
9.7.2Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
9.7.3Jimboite
(Mn
2+
 
,Mg)
 
3
[BO
 
3
]
 
2
9.7.4Sussexite
(Mn
2+
 
,Mg)
 
2
[(OH)(B
 
2
O
 
4
(OH))]
9.7.5Wiserite
(Mn,Mg)
 
14
[Cl|(OH)
 
8
|(Si,Mg)(O,OH)
 
4
|(B
 
2
O
 
5
)
 
4
]
9.7.6Kurchatovite
Ca(Mg,Mn
2+
 
)[B
 
2
O
 
5
]
9.7.8Takéuchiite
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
9.7.9Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
9.7.10Tusionite
Mn
2+
 
Sn
4+
 
[BO
 
3
]
 
2

Other Names for Clinokurchatovite

Other Languages:
German:Clinokurchatovit
Klinokurchatovit
Simplified Chinese:斜硼镁钙石
Spanish:Clinokurchatovita

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 Clinokurchatovite

Reference List:

- +
American Mineralogist (1984): 69: 810.

Soviet Physics – Doklady: 25: 228-230.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Callegari, A., Mazzi, F., Tadini, C. (2003) Modular aspects of the crystal structures of kurchatovite and clinokurchatovite. European Journal of Mineralogy: 15: 277-282.

Internet Links for Clinokurchatovite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Clinokurchatovite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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    • Localities for Clinokurchatovite

    Hide Locality List
    (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.
    Kazakhstan
     
    • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
      • Balkhash (Balqash; Karatas; Prebalkhashie) Region
        • Sayak
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Polar Yakutia
          • Dogdo River Basin
            • Tas-Khayakhtakh Range
    		http://maurice.strahlen.org/yakutia/yakutia.htm
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