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Menzerite-(Y) (Menzerit-(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

(Co-)Type locality

(Co-)Type locality

Kanada/Ontario/Parry Sound District/Georgian Bay/Bonnet Island

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

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

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 5CBI_CZCFkuk9gDTOKLFsQ
GUID (Global unique identifier) FC4820E4-4226-4B16-A4F6-00D338A2C5B1
Database ID 5278