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Kurchatovite

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Igor Vasilyevich Kurchatov
Formula:
Ca(Mg,Mn2+)[B2O5]
System:
Orthorhombic
Colour:
Pale gray
Hardness:
Name:
After Igor Vasil’evich Kurchatov (1903– 1960), Russian physicist, Institute of Nuclear Energy, Moscow, Russia.
This page provides mineralogical data about Kurchatovite.

Classification of Kurchatovite

Approved 1965
6.BA.10

6 : BORATES
B : Diborates
A : Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.
24.4.2.1

24 : ANHYDROUS BORATES
4 : A2[X2O5]
9.7.6

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

Place of Conservation of First Recorded Material:
Fersman Museum
Geological Setting of First Recorded Material:
Iron bearing skarn

Physical Properties of Kurchatovite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Pale gray
Hardness (Mohs):
Cleavage:
Perfect
One perfect, parallel elongation; two imperfect
Density:
3.20 g/cm3 (Measured)    

Crystallography of Kurchatovite

Crystal System:
Orthorhombic
Cell Parameters:
a = 11.15(2) Å, b = 36.4(1) Å, c = 5.55(1) Å
Ratio:
a:b:c = 0.306 : 1 : 0.152
Unit Cell Volume:
V 2,252.52 ų (Calculated from Unit Cell)
Z:
24
Morphology:
Granular to 4mm

Optical Data of Kurchatovite

Type:
Biaxial (-)
RI values:
nα = 1.635 nβ = 1.681 nγ = 1.698
2V:
Measured: 66°
Max Birefringence:
δ = 0.063
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v slight

Chemical Properties of Kurchatovite

Formula:
Ca(Mg,Mn2+)[B2O5]
Essential elements:
All elements listed in formula:

Relationship of Kurchatovite to other Species

6.BA.05SuaniteMg2[B2O5]
6.BA.10ClinokurchatoviteCa(Mg,Fe2+,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]
9.7.7ClinokurchatoviteCa(Mg,Fe2+,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 Kurchatovite

Name in Other Languages:
Simplified Chinese:硼镁钙石
Spanish:Kurchatovita
Traditional Chinese:硼鎂鈣石

Other Information

Bright violet in long wave UV
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 Kurchatovite

Reference List:
Malinko, S.V., Lisitsin, A.E., Dorofeeva, K.A., Ostravskaya, I.V., Shashkin, D.P. (1966): Kurchatovite - new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 95: 203-209.

American Mineralogist (1966): 51: 1817 *(abstract).

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1978): 107: 276.

Malinko, S.V., I.I. Khalturina, A.A. Ozol, V.M. Bocharov (1991) Minerals of boron,- Moscow, Nedra, pp. 108-110 (in Russian).

Pekov, I.V. (1998) Minerals first discovered on the territory of the Former Soviet Union, - Moscow, Ocean Pictures, p.235.

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 Kurchatovite

Localities for Kurchatovite

(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.
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Buriatia Republic (Buryatia)
        • Vitim Plateau
[AmMin 85:1322]; American Mineralogist, Volume 87, pages 1509–1513, 2002; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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