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Irinarassite

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Formula:
Ca3Sn2Al2SiO12
Colour:
pale brown to yellow
Specific Gravity:
4.3 (Calculated)
Crystal System:
Isometric
Name:
Named in honor of Irina Teodorovna Rass (Ирины Теодоровны Расс) (b. 1940), geologist and staff member with the D. Korzhinskii Laboratory of Metamorphism and Metasomatism, Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM), Russian Academy of Sciences, Moscow, Russia.
This page provides mineralogical data about Irinarassite.


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Classification of IrinarassiteHide

Approved
Approval Year:
2011
First Published:
2013

Physical Properties of IrinarassiteHide

Transparency:
Translucent
Colour:
pale brown to yellow
Streak:
ashy yellow
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
4.3 g/cm3 (Calculated)

Optical Data of IrinarassiteHide

Type:
Isotropic
RI values:
n = 1.9
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Very High
Comments:
calculated

Chemical Properties of IrinarassiteHide

Formula:
Ca3Sn2Al2SiO12
IMA Formula:
Ca3Sn2(SiAl2)O12

Crystallography of IrinarassiteHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Cell Parameters:
a = 12.50(3) Å
Unit Cell V:
1,953.13 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.419 (65)
3.125 (60)
2.795 (47)
2.552 (88)
1.976 (27)
1.670 (100)
1.563 (22)
1.333 (26)

Type Occurrence of IrinarassiteHide

General Appearance of Type Material:
irregular spots in kimzeyite-kerimasite or rarely as single crystals not exceeding 10 μm in size, within complex pseudomorphs after zircon
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia (4026/1).
Geological Setting of Type Material:
metasomatically altered carbonate-silicate xenoliths in ignimbrites
Associated Minerals at Type Locality:
Reference:
Galuskina, I. O., Galuskin, E. V., Prusik, K., Gazeev, V. M., Pertsev, N. N., & Dzierżanowski, P. (2013) Irinarassite Ca3Sn2SiAl2O12–new garnet from the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia. Mineralogical Magazine: 77(6): 2857-2866.

Synonyms of IrinarassiteHide

Relationship of Irinarassite to other SpeciesHide

Other Members of this group:
HutcheoniteCa3Ti2(SiAl2)O12Iso. m3m (4/m 3 2/m) : Ia3d
KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3Iso.
SchorlomiteCa3(Ti,Fe3+)2((Si,Fe3+)O4)3Iso.
ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d

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 IrinarassiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Galuskina, I.O., Galuskin, E.V., Prusik, K., Gazeev, V.M., Pertsev, N.N. and Dzierz˙anowski, P. (2011) Irinarassite, IMA 2010-073. CNMNC Newsletter No. 8, April 2011, page 292; Mineralogical Magazine, 75, 289-294.
Galuskina, I. O., Galuskin, E. V., Prusik, K., Gazeev, V. M., Pertsev, N. N., & Dzierżanowski, P. (2013) Irinarassite Ca3Sn2SiAl2O12–new garnet from the Upper Chegem Caldera, Northern Caucasus, Kabardino-Balkaria, Russia. Mineralogical Magazine: 77(6): 2857-2866.

Internet Links for IrinarassiteHide

Localities for IrinarassiteHide

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.
France
 
  • Occitanie
    • Tarn
      • Castelnau-de-Brassac
Gayraud et al., 2012
Russia
 
  • Northern Caucasus Region
    • Kabardino-Balkarian Republic
      • Baksan Valley
        • Upper Chegem volcanic caldera (Verkhnechegemskaya caldera)
Galuskina, I.O., Galuskin, E.V., Prusik, K., Gazeev, V.M., Pertsev, N.N. and Dzierz˙anowski, P. (2011) Irinarassite, IMA 2010-073. CNMNC Newsletter No. 8, April 2011, page 292; Mineralogical Magazine, 75, 289-294.
Galuskina, I.O., Galuskin, E.V., Prusik, K., Gazeev, V.M., Pertsev, N.N. and Dzierz˙anowski, P. (2011) Irinarassite, IMA 2010-073. CNMNC Newsletter No. 8, April 2011, page 292; Mineralogical Magazine, 75, 289-294.
Mineral and/or Locality  
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