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Majorite

Collectors Summary

Color gelbbraun, purpurrot
Streak color weiß
Hardness (Mohs) 7 - 7.5
Crystal System kubisch,

Chemism

Chem­ical formula

{Mg3}[MgSi](Si3)O12

Chem­ical com­po­si­tion

Magnesium, Silicium, Sauerstoff

Unit weight: 401.55552 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Mg3}[MgSi](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

47.81

12

60.00

15.9994300

191.9931600

Magnesium

Mg

24.21

4

20.00

24.3050600

97.2202400

Silicon

Si

27.98

4

20.00

28.0855300

112.3421200

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.08-060

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

Clas­sifica­tion by Hölzel

9.AC.140

9: SILICATES
A: Nesosilicates
C: Garnet-Group
1: Pyralspites - 8-coord. Mg, Fe(2+), Mn(2+); Pyrope - Spessartine-Group

Dana 8th edi­tion

51.04.03a.05

51: Nesosilicate Minerals
04: Nesosilicates Nesosilicate Insular SiO4 Groups Only with cations in [6] and >[6] coordination
03a: Garnet group (Pyralspite series)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

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

Optical Properties

Color

gelbbraun, purpurrot

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

RI value α / ω / n

1.79

Ri mean

1.79

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Cell param­e­ters a (Å)

11.524

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)

1530.417

X-Ray Pow­der Diffrac­tion

2.881(70),
2.575(100),
2.454(40),
2.352(30),
2.262(30),
2.038(20),
1.597(40),
1.540(60)

XRD chart Majorite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

7 - 7.5

VHN (Hard­ness Vick­ers)

1450 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.76 (berechnet)

3.485 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Australien/Western Australia/Eucla/Coorara-Meteorit

Preface

Author (Name, Year)

Smith & Mason, 1970

References

Science 168 (1970), 832.

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

Majorit

Spanish

Majorita

English

Majorite

French

Majorite

Russian

Меджорит

Traditional Chinese

鎂鐵榴石

Simplified Chinese

镁铁榴石

CNMNC (IMA)-Number

IMA 1969-018

RRUFF ID

R210005

CNMNC symbol

Symbol

Maj

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Меджорит

Mineral Dealer

German pages

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

Locations with GPS information