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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)(SiO4)3

Chem­ical com­po­si­tion

Magnesium, Silicium, Sauerstoff

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

Info

Empirical formula:

Mg3(MgSi)(SiO4)3

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

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Pyrope

{Mg3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

'Garnet supergroup'

neue Definition: {X3}[Y2](Z3)φ12

kubisch : kubisch-hexakisoktaedrisch

9.AD.25

Katoite

{Ca3}[Al2](☐3)(OH)12

kubisch : m3m : Ia3d

9.AD.25

Majorite

Mg3(MgSi)(SiO4)3

9.AD.25

'Melanite' (Var.v. Andradite)

9.AD.25

Rubinite

Ca3Ti3+2Si3O12

kubisch : m3m : Ia3d

9.AD.25

Wadalite

Ca6Al5Si2O16Cl3

kubisch : 43m : I43d

9.AD.25

Almandine

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

kubisch : m3m : Ia3d

9.AD.25

Andradite

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

kubisch : m3m : Ia3d

9.AD.25

Calderite

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

kubisch : m3m : Ia3d

9.AD.25

'Hessonite' (Var.v. Grossular)

Ca3Al2(SiO4)3

9.AD.25

'Hibschite' (Var.v. Grossular)

Ca3Al2(SiO4)3-x(OH)4*x {x<0.2-1.5}

kubisch : m3m : Ia3d

9.AD.25

Kimzeyite

{Ca3}[Zr2](SiAl2)O12

kubisch : m3m : Ia3d

9.AD.25

Uvarovite

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

kubisch : m3m : Ia3d

9.AD.25

Goldmanite

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

kubisch : m3m : Ia3d

9.AD.25

Grossular

{Ca3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Holtstamite

{Ca3}[Al2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

9.AD.25

Hutcheonite

{Ca3}[Ti2](SiAl2)O12

kubisch : m3m : Ia3d

9.AD.25

Knorringite

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

kubisch : m3m : Ia3d

9.AD.25

Morimotoite

{Ca3}[TiFe2+](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Schorlomite

{Ca3}[Ti2](SiFe3+2)O12

kubisch : m3m : Ia3d

9.AD.25

Spessartine

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

kubisch : m3m : Ia3d

9.AD.25

Momoiite

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

kubisch : m3m : Ia3d

9.AD.25

Kerimasite

{Ca3}[Zr2](SiFe3+2)O12

kubisch : m3m : Ia3d

9.AD.25

Toturite

{Ca3}[Sn4+2](SiFe3+2)O12

kubisch : m3m : Ia3d

9.AD.25

Menzerite-(Y)

{Y2Ca}[Mg2](Si3)O12

kubisch : m3m : Ia3d

9.AD.25

Elbrusite

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

kubisch : m3m : Ia3d

9.AD.25

Bitikleite

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

kubisch : m3m : Ia3d

9.AD.25

Usturite

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

kubisch : m3m : Ia3d

9.AD.25

Eringaite

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

kubisch : m3m : Ia3d

9.AD.25

Dzhuluite

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

kubisch : m3m : Ia3d

9.AD.25

Irinarassite

{Ca3}[Sn4+2](SiAl2)O12

kubisch : m3m : Ia3d

9.AD.25

Eltyubyuite

Ca12Fe3+10Si4O32Cl6

kubisch : 43m : I43d

9.AD.25

Adrianite

Ca12(Al4Mg3Si7)O32Cl6

kubisch : 43m : I43d

9.AD.25

Priscillagrewite-(Y)

YCa2Zr2Al3O12

kubisch : m3m : Ia3d

9.AD.25

'Hydroandradite' (Var.v. Andradite)

Ca3Fe3+2(SiO4)3-x(OH)4x

9.AD.25

'Hydrougrandite'

(Ca,Mg,Fe2+)3(Fe3+,Al)2(SiO4)3-x(OH)4x

9.AD.25

Nikmelnikovite

Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20

trigonal : 3 : R3

9.AD.25

Henritermierite

{Ca3}[Mn3+2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

9.AD.25

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Pyrope

{Mg3}[Al2](Si3)O12

kubisch : m3m : Ia3d

VIII/A.08-010

Almandine

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

kubisch : m3m : Ia3d

VIII/A.08-020

Spessartine

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

kubisch : m3m : Ia3d

VIII/A.08-030

Calderite

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

kubisch : m3m : Ia3d

VIII/A.08-040

Knorringite

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

kubisch : m3m : Ia3d

VIII/A.08-050

Majorite

Mg3(MgSi)(SiO4)3

VIII/A.08-060

Menzerite-(Y)

{Y2Ca}[Mg2](Si3)O12

kubisch : m3m : Ia3d

VIII/A.08-065

Grossular

{Ca3}[Al2](Si3)O12

kubisch : m3m : Ia3d

VIII/A.08-070

'Hibschite' (Var.v. Grossular)

Ca3Al2(SiO4)3-x(OH)4*x {x<0.2-1.5}

kubisch : m3m : Ia3d

VIII/A.08-080

Katoite

{Ca3}[Al2](☐3)(OH)12

kubisch : m3m : Ia3d

VIII/A.08-090

'Hydrougrandite'

(Ca,Mg,Fe2+)3(Fe3+,Al)2(SiO4)3-x(OH)4x

VIII/A.08-100

Andradite

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

kubisch : m3m : Ia3d

VIII/A.08-110

Schorlomite

{Ca3}[Ti2](SiFe3+2)O12

kubisch : m3m : Ia3d

VIII/A.08-120

Morimotoite

{Ca3}[TiFe2+](Si3)O12

kubisch : m3m : Ia3d

VIII/A.08-125

Uvarovite

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

kubisch : m3m : Ia3d

VIII/A.08-130

Momoiite

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

kubisch : m3m : Ia3d

VIII/A.08-138

Goldmanite

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

kubisch : m3m : Ia3d

VIII/A.08-140

Eringaite

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

kubisch : m3m : Ia3d

VIII/A.08-145

Kimzeyite

{Ca3}[Zr2](SiAl2)O12

kubisch : m3m : Ia3d

VIII/A.08-150

Bitikleite

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

kubisch : m3m : Ia3d

VIII/A.08-160

Dzhuluite

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

kubisch : m3m : Ia3d

VIII/A.08-165

Usturite

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

kubisch : m3m : Ia3d

VIII/A.08-170

Irinarassite

{Ca3}[Sn4+2](SiAl2)O12

kubisch : m3m : Ia3d

VIII/A.08-175

Toturite

{Ca3}[Sn4+2](SiFe3+2)O12

kubisch : m3m : Ia3d

VIII/A.08-180

Kerimasite

{Ca3}[Zr2](SiFe3+2)O12

kubisch : m3m : Ia3d

VIII/A.08-185

Elbrusite

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

kubisch : m3m : Ia3d

VIII/A.08-190

Wadalite

Ca6Al5Si2O16Cl3

kubisch : 43m : I43d

VIII/A.08-200

Eltyubyuite

Ca12Fe3+10Si4O32Cl6

kubisch : 43m : I43d

VIII/A.08-205

Holtstamite

{Ca3}[Al2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

VIII/A.08-210

Henritermierite

{Ca3}[Mn3+2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

VIII/A.08-220

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Pyrope

{Mg3}[Al2](Si3)O12

kubisch : m3m : Ia3d

9.AC.100

Almandine

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

kubisch : m3m : Ia3d

9.AC.110

Spessartine

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

kubisch : m3m : Ia3d

9.AC.120

Majorite

Mg3(MgSi)(SiO4)3

9.AC.140

Calderite

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

kubisch : m3m : Ia3d

9.AC.150

Knorringite

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

kubisch : m3m : Ia3d

9.AC.160

Momoiite

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

kubisch : m3m : Ia3d

9.AC.170

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Bredigite

Ca7Mg(SiO4)4

orthorhombisch : mmm : Pnnm

51.04.01.01

Merwinite

Ca3Mg(SiO4)2

monoklin : 2/m : P21/a

51.04.02.01

Pyrope

{Mg3}[Al2](Si3)O12

kubisch : m3m : Ia3d

51.04.03a.01

Almandine

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

kubisch : m3m : Ia3d

51.04.03a.02

Spessartine

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

kubisch : m3m : Ia3d

51.04.03a.03

Knorringite

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

kubisch : m3m : Ia3d

51.04.03a.04

Majorite

Mg3(MgSi)(SiO4)3

51.04.03a.05

Calderite

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

kubisch : m3m : Ia3d

51.04.03a.06

Andradite

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

kubisch : m3m : Ia3d

51.04.03b.01

Grossular

{Ca3}[Al2](Si3)O12

kubisch : m3m : Ia3d

51.04.03b.02

Uvarovite

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

kubisch : m3m : Ia3d

51.04.03b.03

Goldmanite

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

kubisch : m3m : Ia3d

51.04.03b.04

Schorlomite

{Ca3}[Ti2](SiFe3+2)O12

kubisch : m3m : Ia3d

51.04.03c.01

Kimzeyite

{Ca3}[Zr2](SiAl2)O12

kubisch : m3m : Ia3d

51.04.03c.02

Morimotoite

{Ca3}[TiFe2+](Si3)O12

kubisch : m3m : Ia3d

51.04.03c.03

'Hibschite' (Var.v. Grossular)

Ca3Al2(SiO4)3-x(OH)4*x {x<0.2-1.5}

kubisch : m3m : Ia3d

51.04.03d.01

Katoite

{Ca3}[Al2](☐3)(OH)12

kubisch : m3m : Ia3d

51.04.03d.02

Henritermierite

{Ca3}[Mn3+2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

51.04.04.01

Wadalite

Ca6Al5Si2O16Cl3

kubisch : 43m : I43d

51.04.05.01

Rondorfite

Ca8Mg[Cl2|(SiO4)4]

kubisch : m3 : Fd3

51.04.06.01

CNMNC (IMA)-Number

IMA 1969-018

RRUFF ID

R210005

CNMNC symbol

Symbol

Maj

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