Eringaite (original) (raw)

A valid IMA mineral species

Colour:

light brown to yellow

Specific Gravity:

3.654 (Calculated)

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

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Long-form identifier:

mindat:1:1:40003:9

22730d63-41c2-4900-8439-f92363f95d70

IMA Classification of EringaiteHide

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Classification of EringaiteHide

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9.AD.25

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

Mineral SymbolsHide

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

Physical Properties of EringaiteHide

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Colour:

light brown to yellow

Fracture:

Irregular/Uneven

Density:

3.654 g/cm3 (Calculated)

Chemistry of EringaiteHide

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Mindat Formula:

Ca3Sc2(SiO4)3

Crystallography of EringaiteHide

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Class (H-M):

m_3_m _(_4/_m_32/m ) - Hexoctahedral

Cell Parameters:

a = 12.19 Å

Unit Cell V:

1,811.39 ų (Calculated from Unit Cell)

Comment:

obtained for a grain with the largest Sc2O3 contents

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of EringaiteHide

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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

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Relationship of Eringaite to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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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

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References for EringaiteHide

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Reference List:

Galuskina, I. O., Galuskin, 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 (2) 365-373 doi:10.1180/minmag.2010.074.2.365

Localities for EringaiteHide

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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

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- 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.