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Clinokurchatovite

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Formula:
Ca(Mg,Fe2+,Mn2+)[B2O5]
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

Approved
6.BA.10

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

24 : ANHYDROUS BORATES
4 : A2[X2O5]
9.7.7

9 : Borates
7 : Borates of Mn
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First Recorded Occurrence of Clinokurchatovite

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°
Max Birefringence:
δ = 0.057 - 0.060
Image 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,Fe2+,Mn2+)[B2O5]
Essential elements:
All elements listed in formula:

Relationship of Clinokurchatovite to other Species

6.BA.05SuaniteMg2[B2O5]
6.BA.10KurchatoviteCa(Mg,Mn2+)[B2O5]
6.BA.15SussexiteMn2+BO2(OH)
6.BA.15SzaibélyiteMgBO2(OH)
6.BA.20Wiserite(Mn,Mg)14[Cl|(OH)8|(Si,Mg)(O,OH)4|(B2O5)4]
9.7.1Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2
9.7.2Orthopinakiolite(Mg,Mn2+)2Mn3+(BO3)O2
9.7.3Jimboite(Mn2+,Mg)3[BO3]2
9.7.4SussexiteMn2+BO2(OH)
9.7.5Wiserite(Mn,Mg)14[Cl|(OH)8|(Si,Mg)(O,OH)4|(B2O5)4]
9.7.6KurchatoviteCa(Mg,Mn2+)[B2O5]
9.7.8Takéuchiite(Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2
9.7.9Blatterite(Mn2+,Mg)2(Mn3+,Sb3+,Fe3+)(BO3)O2
9.7.10TusioniteMn2+Sn4+[BO3]2

Other Names for Clinokurchatovite

Name in Other Languages:

Other Information

Health Risks:
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

Localities for Clinokurchatovite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
Mineral and/or Locality  
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