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Kurchatovite

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About KurchatoviteHide

05606690014947089973291.jpg
Igor Vasilyevich Kurchatov
Formula:
Ca(Mg,Mn2+)[B2O5]
Colour:
Pale gray
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.20
Crystal System:
Orthorhombic
Name:
After Igor Vasil’evich Kurchatov (1903– 1960), Russian physicist, Institute of Nuclear Energy, Moscow, Russia.


Hayashi et al. (2017) report a Fe(II) analogue (Mg-rich).


Classification of KurchatoviteHide

Approved
Approval Year:
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

Physical Properties of KurchatoviteHide

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

Optical Data of KurchatoviteHide

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 KurchatoviteHide

Formula:
Ca(Mg,Mn2+)[B2O5]
IMA Formula:
CaMgB2O5

Crystallography of KurchatoviteHide

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 V:
2,252.52 ų (Calculated from Unit Cell)
Z:
24
Morphology:
Granular to 4mm

Type Occurrence of KurchatoviteHide

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

Synonyms of KurchatoviteHide

Other Language Names for KurchatoviteHide

Simplified Chinese:硼镁钙石
Spanish:Kurchatovita
Traditional Chinese:硼鎂鈣石

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Kurchatovite associated with FedorovskiteCa2Mg2B4O7(OH)6
3 photos of Kurchatovite associated with LudwigiteMg2Fe3+(BO3)O2
2 photos of Kurchatovite associated with SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2Cl
1 photo of Kurchatovite associated with FroloviteCa[B(OH)4]2
1 photo of Kurchatovite associated with SzaibélyiteMgBO2(OH)

Related Minerals - Nickel-Strunz GroupingHide

6.BA.05SuaniteMg2[B2O5]Mon.
6.BA.10ClinokurchatoviteCa(Mg,Fe2+,Mn2+)[B2O5]Mon.
6.BA.15SussexiteMn2+BO2(OH)Orth. 2 2 2 : P21 21 2
6.BA.15SzaibélyiteMgBO2(OH)Mon.
6.BA.20Wiserite(Mn2+,Mg)14(B2O5)4(OH)8 · (Si,Mg)(O,OH)4ClTet.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.7.1Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Mon.
9.7.2Orthopinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Orth.
9.7.3Jimboite(Mn2+,Mg)3[BO3]2Orth.
9.7.4SussexiteMn2+BO2(OH)Orth. 2 2 2 : P21 21 2
9.7.5Wiserite(Mn2+,Mg)14(B2O5)4(OH)8 · (Si,Mg)(O,OH)4ClTet.
9.7.7ClinokurchatoviteCa(Mg,Fe2+,Mn2+)[B2O5]Mon.
9.7.8Takéuchiite(Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2Orth.
9.7.9BlatteriteSb5+(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32Orth. mmm (2/m 2/m 2/m) : Pnnm
9.7.10TusioniteMn2+Sn4+[BO3]2Trig. 3 : R3

Fluorescence of KurchatoviteHide

Bright violet in long wave UV

Other InformationHide

IR Spectrum:
Solongo material [cm-1]: 3550w, 3495w, 1469, 1440sh, 1387s, 1356s, 1323s, 1277, 1277, 1223s, 1170sh, 1159s, 984w, 977w, 856, 787, 761, 713, 669, 633, 614, 509, 462, 422, 405
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 KurchatoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.
Ayaka Hayashi, Koichi Momma, Ritsuro Miyawaki, Mitsuo Tanabe, Shigetomo Kishi, Shoichi Kobayashi, Isao Kusachi (2017): Kurchatovite from the Fuka mine, Okayama Prefecture, Japan. Journal of Mineralogical and Petrological Sciences 112, 159-165.

Internet Links for KurchatoviteHide

Localities for KurchatoviteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Japan
 
  • Okayama Prefecture
    • Takahashi City
      • Bicchu-cho (Bitchu-cho)
        • Fuka
Ayaka Hayashi, Koichi Momma, Ritsuro Miyawaki, Mitsuo Tanabe, Shigetomo Kishi, Shoichi Kobayashi, Isao Kusachi (2017): Kurchatovite from the Fuka mine, Okayama Prefecture, Japan. Journal of Mineralogical and Petrological Sciences 112, 159-165.
Russia
 
  • Sakha Republic (Yakutia)
    • Polar Yakutia
      • Dogdo River Basin
        • Tas-Khayakhtakh Range
          • Titovskoe B deposit
Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.
  • Zabaykalsky Krai
    • 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
 
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