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Clinokurchatovite

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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 Cu ore field, Sayak, Balkhash Region (Balqash; Karatas; Prebalkhashie), 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
]
Simplified for copy/paste:Ca(Mg,Fe2+,Mn2+)[B2O5]
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+
 
BO
 
2
(OH)
6.BA.15Szaibélyite
MgBO
 
2
(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+
 
BO
 
2
(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

Search Engines:
  • Look for Clinokurchatovite on Google
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  • External Links:
  • Look for Clinokurchatovite on Webmineral
  • Look for Clinokurchatovite on Athena Mineralogy
  • Look for Clinokurchatovite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Clinokurchatovite details from Handbook of Mineralogy (PDF)
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  • Search for Clinokurchatovite on Well-Arranged Molecules
  • Localities for Clinokurchatovite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (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 Region (Balqash; Karatas; Prebalkhashie)
        • Sayak
          • Sayak Cu ore field
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Russia
     
    • Eastern-Siberian Region
      • Sakha Republic (Saha Republic; Yakutia)
        • Polar Yakutia
          • Dogdo River Basin
            • Tas-Khayakhtakh Range
    http://maurice.strahlen.org/yakutia/yakutia.htm
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