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Kudryavtsevaite

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Formula:
Na3(Mg,Fe)(Fe,Ti)2Ti3O12
Colour:
greyish black
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
3.845 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for Galina Kudryavtseva(1947-2006), a well known Russian mineralogist and founder of the Diamond Mineralogy Laboratory and scientific school for investigation of diamond mineralogy and geochemistry at the Lomonosov State University in Moscow, Russia.
New structure type


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Classification of KudryavtsevaiteHide

Approved
Approval Year:
2012

Physical Properties of KudryavtsevaiteHide

Vitreous
Transparency:
Opaque
Colour:
greyish black
Streak:
black
Hardness:
Hardness:
VHN100=901 kg/mm2 - Vickers
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.845 g/cm3 (Calculated)

Optical Data of KudryavtsevaiteHide

Type:
Anisotropic
Anisotropism:
greyish-bluish rotation tint
Bireflectance:
moderate
Colour in reflected light:
dark grey
Internal Reflections:
none
Pleochroism:
Weak
Comments:
dark grey to slightly bluish grey

Chemical Properties of KudryavtsevaiteHide

Formula:
Na3(Mg,Fe)(Fe,Ti)2Ti3O12
IMA Formula:
Na3MgFe3+Ti4O12

Crystallography of KudryavtsevaiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Cell Parameters:
a = 27.714 Å, b = 2.9881 Å, c = 11.3564 Å
Ratio:
a:b:c = 9.275 : 1 : 3.801
Unit Cell V:
940.45 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.17(100)
4.84(70)
2.973(35)
2.841(50)
2.706(50)
2.541(50)
2.450(70)
2.296(45)
Comments:
From Type Description.

Type Occurrence of KudryavtsevaiteHide

General Appearance of Type Material:
prismatic habit elongated along [010]
Place of Conservation of Type Material:
Museo di Storia Naturale, Università degli Studi di Firenze, Firenze, Italy, catalogue number 3115/I
Geological Setting of Type Material:
host kimberlite consists of serpentinized forsterite and less common phlogopite and Mg-rich ilmenite, as well as Cr-rich diopside and pyrope, cemented by fine-grained carbonate-serpentine aggregates containing minute grains of unidentified opaque minerals. In fractures within the Mg-rich ilmenite, a secondary mineralization is found,
Associated Minerals at Type Locality:

Synonyms of KudryavtsevaiteHide

Other InformationHide

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 KudryavtsevaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Anashkin, S., Bovkun, A., Bindi, L., Garanin, V. and Litvin, Y. (2013) Kudryavtsevaite, IMA 2012-078. CNMNC Newsletter No. 15, February 2013, page 10; Mineralogical Magazine, 77, 1-12.
Anashkin, S., Bovkun, A., Bindi, L., Garanin, V., & Litvin, Y. (2013). Kudryavtsevaite, Na3MgFe3+ Ti4O12, a new kimberlitic mineral. Mineralogical Magazine, 77(3), 327-334.

Internet Links for KudryavtsevaiteHide

Localities for KudryavtsevaiteHide

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.
Botswana (TL)
 
  • Central District
    • Letlhakane
      • Orapa
Anashkin, S., Bovkun, A., Bindi, L., Garanin, V., & Litvin, Y. (2013). Kudryavtsevaite, Na3MgFe3+ Ti4O12, a new kimberlitic mineral. Mineralogical Magazine, 77(3), 327-334.
Mineral and/or Locality  
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