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Eringaite

A valid IMA mineral species
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09015860017774047657500.jpg
Eringaite, etc.

Moss Meteorite, Moss, Østfold, Norway
09015860017774047657500.jpg
Eringaite, etc.

Moss Meteorite, Moss, Østfold, Norway
03417350017784358211490.jpg
Eringaite, etc.

Moss Meteorite, Moss, Østfold, Norway
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About EringaiteHide

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, uvarovite and goldmanite.

Eringaite is a new Sc-rich ultra-refractory silicate and likely the first garnet formed in the solar system. Eringaite is Ti3+-rich, indicating highly reducing environments.
Thortveitite (Sc2Si20 7) identified in the Murchison ultra-refractory inclusion MURl , is probably the first solar silicate, as an early condensate. This discovery implies that eringaite may be the second solar silicate, followed by davisite.


Unique IdentifiersHide

Mindat ID:
40003
Long-form identifier:
mindat:1:1:40003:9

Similar NamesHide

IMA Classification of EringaiteHide

IMA status:
Approved
IMA Formula:
Ca3Sc2Si3O12
Approval year:
2009

Classification of EringaiteHide

Strunz-mindat (2026):
9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
ErgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of EringaiteHide

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

Chemistry of EringaiteHide

Mindat Formula:
Ca3Sc2(SiO4)3
Element Weights:
Element% weight
O39.473 %
Ca24.719 %
Sc18.485 %
Si17.323 %

Calculated from ideal end-member formula.
O
Ca
Sc
Si
Elements listed:
Ca, O, Sc, Si - search for minerals with similar chemistry

Crystallography of EringaiteHide

Crystal System:
Isometric
Class (H-M):
m3m(4/m32/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 Å(69)
2.740 Å(100)
2.502 Å(68)
1.670 Å(30)
1.638 Å(82)
1.370 Å(20)
1.137 Å(19)
1.119 Å(29)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 1: Primary nebular phases4.567-4.561
3 : Solar nebular condensates (CAIs, AOAs, URIs)>4.565

Type Occurrence of EringaiteHide

Type Locality:
ⓘ Vilyui River Basin, Mirninsky District, Sakha, Russia
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:
GrossularKimzeyiteSerpentine SubgroupVesuvianite

Synonyms of EringaiteHide

Other Language Names for EringaiteHide

Dutch:Eringaiet
German:Eringait

Relationship of Eringaite to other SpeciesHide

Member of:
Garnet Group > Garnet Supergroup
Other Members of Garnet Group:
AlmandineFe2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
AndraditeCa3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'Blythite'Mn2+3Mn3+2[SiO4]3
CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
GoldmaniteCa3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
GrossularCa3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'Khoharite'Mg3Fe3+2(SiO4)3
KnorringiteMg3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
MajoriteMg3(MgSi)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
MomoiiteMn2+3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
PyropeMg3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
RubiniteCa3Ti3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'Skiagite'Fe2+3Fe3+2[SiO4]3
SpessartineMn2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'UM1984-37-SiO:CrMn'Mn2+3Cr3+2(SiO4)3
UvaroviteCa3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Eringaite associated with DavisiteCaScAlSiO6
1 photo of Eringaite associated with DiopsideCaMgSi2O6
1 photo of Eringaite associated with SpinelMgAl2O4
1 photo of Eringaite associated with Melilite GroupCa2M(XSiO7)
1 photo of Eringaite associated with HiboniteCaAl12O19
1 photo of Eringaite associated with WarkiteCa2Sc6Al6O20
1 photo of Eringaite associated with Kangite(Sc,Ti,Al,Zr,Mg,Ca,◻)2O3

Related Minerals - Strunz-mindat GroupingHide

9.AD.AdrianiteCa12(Al4Mg3Si7)O32Cl6Iso. 43m : I43d
9.AD.05LarniteCa2SiO4Mon. 2/m
9.AD.10Calcio-olivineCa2SiO4Orth. mmm(2/m2/m2/m)
9.AD.15MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
9.AD.20BredigiteCa7Mg(SiO4)4Orth. mm2 : Pnn2
9.AD.25MidbariteCa3Mg2(V5+2Si)O12Iso. m3m(4/m32/m) : Ia3d
9.AD.25Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25UvaroviteCa3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25EltyubyuiteCa12Fe3+10Si4O32Cl6Iso. 43m : I43d
9.AD.25HenritermieriteCa3Mn3+2(SiO4)2[◻(OH)4]Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.AD.25 va'Hydrougrandite'(Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2]Iso.
9.AD.25CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25NikmelnikoviteCa12(Fe2+Fe3+3Al3◻)[SiO4]6[◻(OH)4]5◻4Trig. 3 : R3
9.AD.25HutcheoniteCa3Ti2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 43m : I43d
9.AD.25RubiniteCa3Ti3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25HoltstamiteCa3Al2(SiO4)2[◻(OH)4]Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.AD.25SpessartineMn2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25KimzeyiteCa3Zr2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25'Khoharite'Mg3Fe3+2(SiO4)3
9.AD.25IrinarassiteCa3Sn2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25KnorringiteMg3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25GoldmaniteCa3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25'Blythite'Mn2+3Mn3+2[SiO4]3
9.AD.25'Skiagite'Fe2+3Fe3+2[SiO4]3
9.AD.25'UM1984-37-SiO:CrMn'Mn2+3Cr3+2(SiO4)3
9.AD.25AlmandineFe2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25 va'Yamatoite'(Mn2+,Ca)3(V3+,Al)2(SiO4)3Iso.
9.AD.25MomoiiteMn2+3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25GrossularCa3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25AndraditeCa3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25MajoriteMg3(MgSi)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25PyropeMg3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25SchorlomiteCa3Ti2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.30HafnonHf(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30ZirconZr(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30CoffiniteU(SiO4) · nH2OTet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30ThoriteTh(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30 va'Auerlite'near Th(Si,P)O4
9.AD.30Stetindite-(Ce)Ce4+SiO4Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.35'Tombarthite-(Y)'Y4(Si,H4)4O12-x(OH)4+2xMon.
9.AD.35HuttoniteThSiO4Mon. 2/m
9.AD.40EulytineBi4(SiO4)3Iso. 43m : I43d
9.AD.45ReiditeZr(SiO4)Tet. 4/m : I41/a
9.AD.55JeffbeniteMg3Al2Si3O12Tet. 42m : I42d

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.

Internet Links for EringaiteHide

References for EringaiteHide

Localities for EringaiteHide

Showing 4 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Italy
 
  • Emilia-Romagna
    • Ferrara Province
      • Vigarano Mainarda
        • Vigarano Pieve
Ma (2012)
Mexico
 
  • Chihuahua
    • Pueblito de Allende
Krot et al. (2015) +1 other reference
Norway
 
  • Østfold
    • Moss
Krot et al. (2019)
Russia (TL)
 
  • Sakha
    • Mirninsky District
Galuskina et al. (2010)
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