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Eringaite

A valid IMA mineral species
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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, uvarovite and goldmanite.


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Unique IdentifiersHide

Mindat ID:
40003
Long-form identifier:
mindat:1:1:40003:9
GUID
(UUID V4):
22730d63-41c2-4900-8439-f92363f95d70

IMA Classification of EringaiteHide

IMA status:
Approved
Approval year:
2009

Classification of EringaiteHide

Strunz-mindat (2024):
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
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
Elements listed:
Ca, O, Sc, Si - search for minerals with similar chemistry

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 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:
VesuvianiteSerpentine SubgroupKimzeyiteGrossular

Synonyms of EringaiteHide

Relationship of Eringaite to other SpeciesHide

Member of:
Garnet Group > Garnet Supergroup
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
BlythiteMn2+3Mn3+2[SiO4]3
CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
GoldmaniteCa3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
GrossularCa3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
KhohariteMg3Fe3+2(SiO4)3
KnorringiteMg3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
MajoriteMg3(MgSi)(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
MomoiiteMn2+3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
PyropeMg3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
SkiagiteFe2+3Fe3+2[SiO4]3
SpessartineMn2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
UvaroviteCa3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d

Related Minerals - Strunz-mindat GroupingHide

9.AD.AdrianiteCa12(Al4Mg3Si7)O32Cl6Iso. 4 3m : I4 3d
9.AD.05LarniteCa2SiO4Mon. 2/m
9.AD.10Calcio-olivineCa2SiO4Orth. mmm (2/m 2/m 2/m)
9.AD.15MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
9.AD.20BredigiteCa7Mg(SiO4)4Orth. mm2 : Pnn2
9.AD.25AndraditeCa3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25AlmandineFe2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25GoldmaniteCa3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25GrossularCa3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25HenritermieriteCa3Mn3+2(SiO4)2[◻(OH)4]Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AD.25KimzeyiteCa3Zr2(SiO4)(AlO4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25KnorringiteMg3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25MajoriteMg3(MgSi)(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25PyropeMg3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25SchorlomiteCa3Ti2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25SpessartineMn2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25UvaroviteCa3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 4 3m : I4 3d
9.AD.25 vaHydrougrandite(Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2]Iso.
9.AD.25 vaYamatoite(Mn2+,Ca)3(V3+,Al)2(SiO4)3Iso.
9.AD.25HoltstamiteCa3Al2(SiO4)2[◻(OH)4]Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AD.25KhohariteMg3Fe3+2(SiO4)3
9.AD.25KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25MomoiiteMn2+3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25IrinarassiteCa3Sn2(SiO4)(AlO4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25EltyubyuiteCa12Fe3+10Si4O32Cl6Iso. 4 3m : I4 3d
9.AD.25BlythiteMn2+3Mn3+2[SiO4]3
9.AD.25SkiagiteFe2+3Fe3+2[SiO4]3
9.AD.25HutcheoniteCa3Ti2(SiO4)(AlO4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25UM1984-37-SiO:CrMnMn2+3Cr3+2(SiO4)3
9.AD.25RubiniteCa3Ti3+2Si3O12Iso.
9.AD.25NikmelnikoviteCa12(Fe2+Fe3+3Al3◻)[SiO4]6[◻(OH)4]5◻4Trig. 3 : R3
9.AD.30 vaAuerlitenear Th(Si,P)O4
9.AD.30CoffiniteU(SiO4) · nH2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30HafnonHfSiO4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30ThoriteTh(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30ZirconZr(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30Stetindite-(Ce)Ce(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.35HuttoniteThSiO4Mon. 2/m
9.AD.35Tombarthite-(Y)Y4(Si,H4)4O12-x(OH)4+2xMon.
9.AD.40EulytineBi4(SiO4)3Iso. 4 3m : I4 3d
9.AD.45ReiditeZrSiO4Tet. 4/m : I41/a
9.AD.55JeffbeniteMg3Al2Si3O12Tet. 4 2m : I4 2d

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

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 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.
Mexico
 
  • Chihuahua
    • Pueblito de Allende
Krot et al. (2015) +1 other reference
Russia (TL)
 
  • Sakha
    • Mirninsky District
Galuskina et al. (2010)
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