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Eringaite

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Formula:
Ca3Sc2(SiO4)3
Colour:
light brown to yellow
Lustre:
Vitreous
Specific Gravity:
3.654 (Calculated)
Crystal System:
Isometric
Name:
from the Eringa River, the tributary of the Wiluy River
Garnet Group. First scandium-dominant garnet recognized. The scandium analogue of grossular, andradite, and uvarovite.


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Classification of EringaiteHide

Approved
Approval Year:
2009

Physical Properties of EringaiteHide

Vitreous
Transparency:
Transparent
Colour:
light brown to yellow
Streak:
creamy white
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.654 g/cm3 (Calculated)

Chemical Properties of EringaiteHide

Formula:
Ca3Sc2(SiO4)3

Crystallography of EringaiteHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Setting:
Ia3d
Cell Parameters:
a = 12.19 Å
Unit Cell V:
1,811.39 ų (Calculated from Unit Cell)
Z:
8
Comment:
obtained for a grain with the largest Sc2O3 contents

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.064(69)
2.740(100)
2.502(68)
1.670(30)
1.638(82)
1.370(20)
1.137(19)
1.119(29)

Type Occurrence of EringaiteHide

General Appearance of Type Material:
regular growth zones and irregular spots in complex garnet crystals containing a kimzeyite core
Place of Conservation of Type Material:
The type specimen No. 3837/1 is deposited in the collection of the Fersman Mineralogical Museum in Moscow (Russia).
Geological Setting of Type Material:
rodingite rocks (metasomatic origin)
Associated Minerals at Type Locality:

Synonyms of EringaiteHide

Relationship of Eringaite to other SpeciesHide

Other Members of this group:
AlmandineFe2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
AndraditeCa3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.
GoldmaniteCa3V3+2(SiO4)3Iso.
GrossularCa3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
KnorringiteMg3Cr2(SiO4)3Iso.
MajoriteMg3(Fe2+,Si,Al)2(SiO4)3Iso.
Menzerite-(Y){(Y,REE),(Ca,Fe2+)}3{(Mg,Fe2+),(Fe3+,Al)}2[SiO4]3Iso. m3m (4/m 3 2/m) : Ia3d
Momoiite(Mn2+,Ca)3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
MorimotoiteCa3(Ti,Fe2+,Fe3+)2((Si,Fe3+)O4)3Iso.
PyropeMg3Al2(SiO4)3Iso.
SpessartineMn2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
UvaroviteCa3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d

Other InformationHide

Notes:
Raman bands [cm-1]: 335, 511, 735, 880 and 937
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 EringaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gałuskina, I.O., Gałuskin, E.V., Lazic, B., Armbruster, T., Dzierżanowski, P., Prusik, K., Wrzalik, R. (2010): Eringaite, Ca3Sc2(SiO4)3, a new mineral of the garnet group. Mineralogical Magazine, 74, 365-373.

Internet Links for EringaiteHide

Localities for EringaiteHide

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.
Mexico
 
  • Chihuahua
    • Pueblito de Allende
Krot, A.N., Nagashima, K., Ma, C. and Wasserburg, G.J. (2015): Forsterite-bearing type B CAI with a relict eringaite-bearing ultra-refractory CAI. Meteoritics and Planetary Science: 50 (S1): Abstract No. 5308
Russia (TL)
 
  • Eastern-Siberian Region
    • Sakha Republic (Yakutia)
I. O. Galuskina, E. V. Galuskin, B. Lazic, T. Armbruster, P. DzierżAnowski, K. Prusik and R. Wrzalik(2010):Eringaite, Ca3Sc2(SiO4)3, a new mineral of the garnet group, Mineralogical Magazine, Vol.74(2), pp.365–373; Gałuskina, I.O., Gałuskin, E.V., Lazic, B., Armbruster, T., Dzierżanowski, P., Prusik, K., Wrzalik, R. (2010): Eringaite, Ca3Sc2(SiO4)3, a new mineral of the garnet group. Mineralogical Magazine, 74, 365-373.
Mineral and/or Locality  
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