Majorite

The term "majoritic garnet" is often used in the literature. This term will normally be used for pyrope garnets with a small majorite component, and not the mineral majorite.

History

Activities related to discovery and approval of the group members

Structural context

Majorite
Crystal System isometricCrystal Class hexoctahedralSpace Group Ia-3d
a11.4795—11.5816 (11.5013)
b11.4794—11.5816 (11.5018)
c11.4774—11.539 (11.4956)
alpha90
beta90
gamma90
volume1512.756—1546.4 (1520.7198)

Based on 24 measurements

Chemical context

Stoichiometric formulas

Majorite
mindat.org
  • March 13, 2023Mg3(MgSi)(SiO4)3
IMA
  • March 13, 2023Mg3(MgSi)(SiO4)3
mineralogy.rocks
  • Aug. 30, 2022Mg3(Fe2+,Si,Al)2(SiO4)3

Elements recorded on EPMA

24
Mg
24
O
24
Si
22
Al
15
Cr
14
Fe
7
Ca
1
Mn
1
P

Physical properties

ColorColor entities, recognized using a custom trained NER model
    • pale yellowish brown
    Color noteOriginal color note from the source
    Purple, pale yellowish brown
    StreakStreak entities, recognized using a custom trained NER model
      Streak noteOriginal streak note from the source
      White
      Lustre
      Vitreous
      Transparency
      Translucent
      Hardness
      7—7.5
      Calculated density
      4