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Menzerite-(Y)

Collectors Summary

Color rötlich braun
Cleavages nicht erwiesen
Crystal System kubisch, Ia3d
Morphology Kernzonen bis 70 µm Durchmesser, in Almandin

Chemism

Chem­ical formula

{Y2Ca}[Mg2](Si3)O12

Addi­tional chem. informa­tion

Endglied ist:(Y2Ca)(Mg2)Si3O12; Granat-Gruppe

Chem­ical com­po­si­tion

Calcium, Magnesium, Silicium, Yttrium, Sauerstoff

Unit weight: 542.749974 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Y2Ca}[Mg2](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

35.37

12

60.00

15.9994300

191.9931600

Magnesium

Mg

8.96

2

10.00

24.3050600

48.6101200

Silicon

Si

15.52

3

15.00

28.0855300

84.2565900

Calcium

Ca

7.38

1

5.00

40.0784000

40.0784000

Yttrium

Y

32.76

2

10.00

88.9058520

177.8117040

Anal­y­sis wt%

SiO2 : 30.38, TiO2 : 1.38, Al2O3 : 4.46, Fe2O3 : 10.77, FeO : 9.97, MgO : 3.85, MnO : 0.96, Y2O3 : 14.42, Dy2O3 : 0.91, Ho2O3 : 0.46, Er2O3 : 2.25, Tm2O3 : 0.43, Yb2O3 : 2.62, Lu2O3 : 0.83, CaO : 15.42, Ln2O3 : 22.57 (Ref: Canadian 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

VIII/A.08-065

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

Clas­sifica­tion by Hölzel

9.AC.600

9: SILICATES
A: Nesosilicates
C: Garnet-Group
6: Garnets with Rare Earth Elements

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

Color

rötlich braun

max. Birefrin­gence

0.000

RI value α / ω / n

1.844

RI value β

al.

Ri mean

1.844

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

11.995

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)

1725.841

Kristall struc­ture

Struktur bestimmt, siehe Edward S. Grew et al., 2010

X-Ray Pow­der Diffrac­tion

2.999(36), 2.682(100), 2.448(33), 2.190(17), 1.663(17), 1.603(44), 1.309(18)

XRD chart Menzerite-(Y)

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

Morphol­ogy

Kernzonen bis 70 µm Durchmesser, in Almandin

Physical Properties

Density (g/cm³)

4.177 ( ρ calc. Mineralienatlas )

Cleav­ages

nicht erwiesen

Tenac­ity

spröde

Preface

Name from

Georg Menzer (1897–1989), Kristallograph, der die Kristallstruktur von Granat aufklärte.

Author (Name, Year)

Edward S. Grew et al., 2010

References

Edward S. Grew, Jeffrey H. Marsh, Martin G. Yates, Biljana Lazic, Thomas Armbruster, Andrew Locock, Samuel W. Bell, M. Darby Dyar, Heinz-Jürgen Bernhardt, Olaf Medenbach: Menzerite-(y), a new species, {(Y,REE)(Ca,Fe2+)2}[(Mg,Fe2+)(Fe3+,Al)](Si3)O12, from a felsic granulite, Parry Sound, Ontario, and a new garnet end-member, {Y2Ca}[Mg2](Si3)O12. Can. Mineral. 48 (2010) S.1171-1193.

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]

IMA group assignments

 
{X3}[Y2](Z3)φ12
 
 


 
 
 
{Fe2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Sc2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Ti2](SiAl2)O12
kubisch
Ia3d

 
 
 
{Mg3}[Cr3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Mg3}[MgSi](Si3)O12
kubisch
 

 
 
 
{Y2Ca}[Mg2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[TiFe2+](Si3)O12
kubisch
Ia3d

 
 
 
{Mg3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Cr3+2](Si3)O12
kubisch
Ia3d

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Actuality: 20. May 2022 - 06:20:03

Other languages

German

Menzerit-(Y)

Spanish

Menzerita-(Y)

English

Menzerite-(Y)

Russian

Мензерит-(Y)

CNMNC (IMA)-Number

IMA 2009-050

CNMNC symbol

Symbol

Mzr-Y

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