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Eringaite

Collectors Summary

Cleavages keine
Fracture unregelmäßig
Crystal System kubisch, Ia3d

Chemism

Chem­ical formula

{Ca3}[Sc2](Si3)O12

Addi­tional chem. informa­tion

Granat-Gruppe

Chem­ical com­po­si­tion

Calcium, Scandium, Silicium, Sauerstoff

Unit weight: 486.3967716 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Ca3}[Sc2](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

39.47

12

60.00

15.9994300

191.9931600

Silicon

Si

17.32

3

15.00

28.0855300

84.2565900

Calcium

Ca

24.72

3

15.00

40.0784000

120.2352000

Scandium

Sc

18.49

2

10.00

44.9559108

89.9118216

Anal­y­sis wt%

SiO2 : 29.39, TiO2 : 7.17, ZrO2 : 5.28, Al2O3 : 3.15, Sc2O3 : 10.67, Cr2O3 : 1.05, Fe2O3 : 8.48, FeO : 0.50, MgO : 0.95, CaO : 33.19 (Ref: Mineralogical Magazine 2010)

Strunz 9th edi­tion incl. updates

9.AD.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
D: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] und gewöhnlich größerer Koordination
25:Granat-Gruppe

Lapis Clas­sifica­tion

VIII/A.08-145

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
8: Kationen in kubischer und oktaedrischer Koordination [8+6]; Granat-Gruppe

Clas­sifica­tion by Hölzel

9.AC.460

9: SILICATES
A: Nesosilicates
C: Garnet-Group
4: Uvavorite-Group - 6-coord. Cr, V, Sc

IMA sta­tus

anerkannt, Neue Mineralien - IMA Web-Seite, Okt. 2009

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Garnet supergroup  ⇒ Silicate garnets; Garnet group (Z charge 12)

Optical Properties

max. Birefrin­gence

0.000

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

12.19

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

1811.386

Kristall struc­ture

Struktur bestimmt

X-Ray Pow­der Diffrac­tion

3.064(62), 2.740(88), 2.502(72), 1.670(32), 1.638(100), 1.138(23), 1.119(30)

XRD chart Eringaite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.654 (berechnet)

3.567 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

unregelmäßig

Preface

Author (Name, Year)

Irina O. Galuskina, 2009

References

Neue Mineralien - IMA Web-Seite, Okt. 2009.

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Nomenclature of the garnet supergroup. American Mineralogist; preprint December 2012 - [Formel]

Galuskina, I. O., Galuskin, E. V., Lazic, B., Armbruster, T., Dzierżanowski, P., Prusik, K., & Wrzalik, R. (2010). Eringaite, Ca 3 Sc 2 (SiO 4) 3, a new mineral of the garnet group. Mineralogical Magazine, 74(2), 365-373.

IMA group assignments

Other languages

German

Eringait

English

Eringaite

Russian

Эрингаит

CNMNC (IMA)-Number

IMA 2009-054

CNMNC symbol

Symbol

Erg

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Eringait
Google-Bilder-Suche - search for: Eringait
Mineralienatlas.de (Forum) - search for: Eringait

English pages

Mindat - search for: Eringaite
Webmineral - search for:Eringaite
Handbook-of-Mineralogy - search for: Eringaite
RRUFF - Raman, XRD and other mineral data - search for: Eringaite
RRUFF - References and PDF downloads - search for: Eringaite
American-Mineralogist-Crystal-Structure-Database - search for: Eringaite
Strahlen.org - search for: Eringaite

Russian pages

Webmineral.ru - search for: Эрингаит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Eringait
Crystal-Treasure.com - search for: Eringait
Bosse - search for: Eringait
Edelsteine Neuburg - Gundolf Fischer - search for: Eringait

Locations with GPS information