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Majorite

Formula:
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
[SiO
 
4
]
 
3
System:IsometricColour:Brown, yellow
Hardness:7 - 7½


Garnet Group.

Classification of Majorite

IMA status:Approved
Strunz 8th edition ID:8/A.08-60
Nickel-Strunz 10th (pending) edition ID:9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
Dana 8th edition ID:51.4.3a.5

51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Hey's CIM Ref.:14.21.13

14 : Silicates not Containing Aluminum
21 : Silicates of Fe and Mg
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Type Occurrence of Majorite

Type Locality:Coorara Meterorite, Eucla, Western Australia, Australia
Year of Discovery:1970

Physical Properties of Majorite

Lustre:Vitreous
Colour:Brown, yellow
Streak:White
Hardness (Mohs):7 - 7½

Crystallography of Majorite

Crystal System:Isometric
Cell Parameters:a = 11.52Å
Unit Cell Volume:V 1,528.82 ų (Calculated from Unit Cell)

Optical Data of Majorite

Type:Isotropic

Chemical Properties of Majorite

Formula:
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
[SiO
 
4
]
 
3
Essential elements:Fe, Mg, O, Si
All elements listed in formula:Al, Fe, Mg, O, Si
Common Impurities:Cr,Ni,Ca,Na

Relationship of Majorite to other Species

Series:Forms a series with Pyrope (see here)
Member of:Garnet Group
Related Minerals - Nickel-Strunz Grouping):

- +
9.AD.05Larnite
Ca
 
2
[SiO
 
4
]
9.AD.10Calcio-Olivine
Ca
 
2
[SiO
 
4
]
9.AD.15Merwinite
Ca
 
3
Mg[SiO
 
4
]
 
2
9.AD.20Bredigite
Ca
 
7
Mg[SiO
 
4
]
 
4
9.AD.25Andradite
Ca
 
3
Fe
3+
2
[SiO
 
4
]
 
3
9.AD.25Almandine
Fe
2+
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
[SiO
 
4
]
 
3
9.AD.25Goldmanite
Ca
 
3
(V
3+
 
,Al,Fe
3+
 
)
 
2
[SiO
 
4
]
 
3
9.AD.25Grossular
Ca
 
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Henritermierite
Ca
 
3
(Mn
3+
 
,Al)
 
2
[(OH)
 
4
|(SiO
 
4
)
 
2
]
9.AD.25Hibschite
Ca
 
3
Al
 
2
[(OH)
 
6-1
|(SiO
 
4
)
 
1.5-2.5
]
9.AD.25Hydroandradite
Ca
 
3
Fe
3+
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
9.AD.25Katoite
Ca
 
3
Al
 
2
[(OH)
 
8-6
|(SiO
 
4
)
 
1-1.5
]
9.AD.25Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
[(Si,Al,Fe
3+
 
)O
 
4
]
 
3
9.AD.25Knorringite
Mg
 
3
Cr
 
2
[SiO
 
4
]
 
3
9.AD.25Morimotoite
Ca
 
3
(Ti,Fe
2+
 
,Fe
3+
 
)
 
2
[(Si,Fe
3+
 
)O
 
4
]
 
3
 (?)
9.AD.25Pyrope
Mg
 
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Schorlomite
Ca
 
3
(Ti,Fe
3+
 
)
 
2
[(Si,Fe
3+
 
,Fe
2+
 
)O
 
4
]
 
3
9.AD.25Spessartine
Mn
2+
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Uvarovite
Ca
 
3
Cr
 
2
[SiO
 
4
]
 
3
9.AD.25Wadalite
Ca
 
6
(Al,Mg)
 
4
[Cl
 
3
|O
 
4
|{(Si,Al,Fe
3+
 
)O
 
4
}
 
3
]
9.AD.25Holtstamite
Ca
 
3
(Al,Mn
3+
 
)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
9.AD.25IMA2009-029
Ca
 
3
Zr
 
2
(Fe
3+
2
Si)O
 
12
9.AD.25IMA2009-033
Ca
 
3
Sn
 
2
(Fe
 
2
Si)O
 
12
9.AD.25IMA2009-026
(Mn
2+
 
,Ca)
 
3
V
3+
2
(SiO
 
4
)
 
3
9.AD.30Coffinite
(U,Th)[(OH)
 
4x
|(SiO
 
4
)
 
1-x
]
9.AD.30Hafnon
(Hf,Zr)[SiO
 
4
]
9.AD.30Thorite
(Th,U)[SiO
 
4
]
9.AD.30Thorogummite
(Th,U)[(OH)
 
4x
|(SiO
 
4
)
 
1-x
]
9.AD.30Zircon
Zr[SiO
 
4
]
9.AD.30Stetindite-(Ce)
Ce[SiO
 
4
]
9.AD.35Huttonite
Th[SiO
 
4
]
9.AD.35Tombarthite-(Y)
Y
 
4
[HSiO
 
4
]
 
3
9.AD.40Eulytine
Bi
 
4
[SiO
 
4
]
 
3
9.AD.45Reidite
Zr[SiO
 
4
]
Related Minerals - Hey's Index Grouping:

- +
14.21.1Olivine
(Mg,Fe
2+
 
)
 
2
[SiO
 
4
]
14.21.2Ringwoodite
(Mg,Fe
2+
 
)
 
2
[SiO
 
4
]
14.21.3Wadsleyite
(Mg,Fe
2+
 
)
 
2
[SiO
 
4
]
14.21.4Clinoferrosilite
Fe
2+
 
(Fe
2+
 
,Mg)[Si
 
2
O
 
6
]
14.21.5Anthophyllite
☐[Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
14.21.6Cummingtonite
[ ][Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
14.21.7 Magnesiocummingtonite
14.21.8Grunerite
[ ][Fe
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
14.21.9Minnesotaite
(Fe,Mg)
 
3
Si
 
4
O
 
10
(OH)
 
2
14.21.10Chesterite
(Mg,Fe)
 
17
Si
 
20
O
 
54
(OH)
 
6
14.21.11Jimthompsonite
(Mg,Fe)
 
5
Si
 
6
O
 
16
(OH)
 
2
14.21.12Clinojimthompsonite
(Mg,Fe)
 
5
Si
 
6
O
 
16
(OH)
 
2
14.21.14Balangeroite
(Mg,Fe,Fe,Mn)
 
42
Si
 
16
O
 
54
(OH)
 
40

Other Names for Majorite

Synonyms:
IMA1969-018
Other Languages:
German:Majorit
Russian:Меджорит
Spanish:Majorita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Majorite

Reference List:American Mineralogist (1970): 55: 1815.

Akaogi, M., K. Kusaba, J. Susaki, T. Yagi, M. Matsui, T. Kikegawa, H. Yusa, and E. Ito (1992), High-pressure high-temperature stability of a α-PbO2-type TiO2 and MgSiO3 majorite: calorimetric and in situ X-ray diffraction studies. In Y. Syono and M.H. Manghnani, Editors, High-Pressure Research Application to Earth and Planetary Sciences: 67: 447-455. Terra Scientific/American Geophysical Union, Tokyo/Washington, D.C.

American Mineralogist (1993): 78: 1165.

Gwanmesia, G.D., J. Liu, G. Chen, S. Kesson, S.M. Rigden, & R.C. Liebermann (2000), Elasticity of the pyrope (Mg3Al2Si3O12) - majorite (MgSiO3) garnets solid solution: Physics and Chemistry of Minerals: 27: 445-452.

Internet Links for Majorite

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  • Raman and XRD data at RRUFF project
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  • Majorite details from Handbook of Mineralogy (PDF)
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    Localities for Majorite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • Queensland
      • South Gregory
        • Tenham Station
    		Lunar and Planetary Science XXXIV (2003); American Mineralogist, Volume 84, pages 267–271, 1999
    • Western Australia
      • Eucla
    		Science 1970, 832-3
    Canada
     
    • Alberta
      • Peace River
    		Canadian Mineralogist Vol. 21, pp. 29-35 (1983)
    • Saskatchewan
      • Catherwood
    		Canadian Mineralogist (1977): 15: 97-101.
    China
     
    • Hubei Province
      • Suizhou Prefecture
        • Zengdu District
          • Dayanpo
    		Xie Xiande, Shu Jinfu, and Chen Ming (2005): Science in China, Series D (Earth Sciences), 48(6), 815-821.
    • Jiangsu Province
      • Taizhou Prefecture
        • Taizhou City
          • Sixiangkou
    		Miyajima, N., El Goresy, A., Dupas-Bruzek, C., Seifert, F., Rubie, D.C., Chen, M., Xie, X. (2007): Ferric iron in Al-bearing akimotoite coexisting with iron-nickel metal in a shock-melt vein in an L-6 chondrite. American Mineralogist, 92, 1545-1549.
    Guinea
     
    • Kankan Region
    India
     
    • Bihar
      • Gaya District
    Kazakhstan
     
    • Kökshetaü Oblysy (Kokshatau [Kokchetav] Oblast')
      • Kokchetav Massif
    		Geology : Online Forum / Geology, Vol. 30, Issue 10, pp. 947-950, Oct. 2002.
    Oman
     
    • Dhofar (Al Janubiyah) Province
    		D.D. Badjukov et al. , Lunar and Planetary Science, XXXVI (2005), 1684.pdf
    Solomon Islands
     
    • Malaita Province
      • Malaita Island (Mala Island)
    		Ken Collerson (2000) Science (reported in: http://news.bbc.co.uk/2/hi/science/nature/755631.stm )
    South Africa
     
    • Free State Province
      • Clocolan
    		Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
    • Northwest Province
      • Swartruggens
    		Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
    USA
     
    • New Mexico
      • Harding Co.
    		Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
    • Texas
      • Randall Co.
    		Zhidong Xie et al. , Lunar and Planetary Science XXXI, 2065.pdf
    Mineral and/or Locality
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