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Usturite

Collectors Summary

Crystal System kubisch, Ia3d

Chemism

Chem­ical formula

{Ca3}[Sb5+Zr](Fe3+3)O12

Addi­tional chem. informa­tion

Antimon-Granat

Chem­ical com­po­si­tion

Antimon, Calcium, Eisen, Zirconium, Sauerstoff

Unit weight: 692.74826 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Ca3}[SbZr](Fe3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

27.71

12

60.00

15.9994300

191.9931600
Calcium

Ca

17.36

3

15.00

40.0784000

120.2352000
Iron

Fe

24.18

3

15.00

55.8452000

167.5356000
Zirconium

Zr

13.17

1

5.00

91.2242000

91.2242000
Antimony

Sb

17.58

1

5.00

121.7601000

121.7601000

Anal­y­sis wt%

SiO2 : 1.52, Sb2O5 : 18.79, TiO2 : 2.39, ZrO2 : 15.92, SnO2 : 6.15, Al2O3 : 8.29, Fe2O3 : 18.74, FeO : 0.87, UO3 : 0.64, CaO : 25.54 (Ref: American Mineralogist 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

IV/A.07-070

IV: OXIDE
A: Oxide mit Verhältnis Metall : Sauerstoff = 1:1 und 2:1 (M2O, MO)

Clas­sifica­tion by Hölzel

4.DM.150

4: OXIDES
D: Dioxides
M: Oxides with Garnet structure

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

 Garnet supergroup  ⇒ Oxide garnets; Bitikleite group (Z charge 9)

Optical Properties

max. Birefrin­gence

0.000

RI value α / ω / n

1.90

Ri mean

1.900~

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

12.49

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)

1948.441

Kristall struc­ture

Struktur bestimmt

X-Ray Pow­der Diffrac­tion

4.416(60), 3.123(71), 2.793(55), 2.550(97), 1.732(22), 1.669(100), 1.396(26), 1.140(40)
XRD chart Usturite

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

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

4.470 (berechnet)

4.723 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Nordkaukasus, Föderationskreis/Kabardino-Balkarien, Republik/Obere vulkanische Chegem-Struktur (Verkhnechegemskaya Caldera)

Preface

Author (Name, Year)

Irina O. Galuskina et al., 2010

Addi­tional Informa­tion

Raman Spektrum ähnlich denen von Kimzeyit und Toturit (siehe Erstbeschreibung)

References

Irina O. Galuskina, Evgeny V. Galuskin, Thomas Armbruster, Biljana Lazic, Piotr Dzierzanowski, Viktor M. Gazeev, Krystian Prusik, Nikolai N. Pertsev, Antoni Winiarski, Aleksandr E. Zadov, Roman Wrzalik, Anatoly G. Gurbanov: Bitikleite-(SnAl) and bitikleite-(ZrFe): New garnets from xenoliths of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. American Mineralogist 95 (2010) S.959-967.

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; Counting garnets: a new nomenclature of the garnet supergroup; European Mineralogical Conference; Vol. 1, EMC2012-21-2

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]

IMA group assignments

 
Garnet supergroup
{X3}[Y2](Z3)φ12
 
 

 
 
Oxide garnets; Bitikleite group (Z charge 9)
 
 
 

 
 
 
Bitikleite
{Ca3}[Sb5+Sn4+](Al3)O12
kubisch
Ia3d

 
 
 
Dzhuluite
{Ca3}[Sb5+Sn4+](Fe3+3)O12
kubisch
Ia3d

 
 
 
Elbrusite
{Ca3}[U6+0.5Zr1.5](Fe3+3)O12
kubisch
Ia3d

 
 
 
Usturite
{Ca3}[Sb5+Zr](Fe3+3)O12
kubisch
Ia3d

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Actuality: 16. May 2022 - 20:04:25

Other languages

German

Usturit

Spanish

Usturita

English

Usturite

Russian

Устурит

old name

German

Bitikleit-(ZrFe)

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Counting garnets: a new nomenclature of the garnet supergroup; European Mineralogical Conference; Vol. 1, EMC2012-21-2

Spanish

Bitikleita-(ZrFe)

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Counting garnets: a new nomenclature of the garnet supergroup; European Mineralogical Conference; Vol. 1, EMC2012-21-2

English

Bitikleite-(ZrFe)

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Counting garnets: a new nomenclature of the garnet supergroup; European Mineralogical Conference; Vol. 1, EMC2012-21-2

CNMNC (IMA)-Number

IMA 2009-053

CNMNC symbol

Symbol

Ust

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