Enstatite

Enstatite-Ferrosilite Series.

History

Activities related to discovery and approval of the group members

Structural context

Enstatite
Crystal System orthorhombicCrystal Class orthorhombic dipyramidalSpace Group Pbca
a5.1815—18.5132 (17.5128)
b8.491—18.2321 (8.8926)
c4.908—8.8085 (5.2124)
alpha90
beta90—109.41 (91.2378)
gamma90
volume381.496—885.246 (803.3368)

Based on 116 measurements

Chemical context

Stoichiometric formulas

Enstatite
mindat.org
  • March 13, 2023Mg2Si2O6Simplified: MgSiO3.
IMA
  • March 13, 2023Mg2Si2O6
mineralogy.rocks
  • Aug. 30, 2022Mg2(Si2O6)

Elements recorded on EPMA

112
Mg
112
O
112
Si
65
Fe
34
Ca
33
Al
10
Mn
8
Ti
3
Li
1
Co
1
Cr

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • greenish white
  • yellowish green
  • olive-green
      Color noteOriginal color note from the source
      White, yellowish green, brown, greenish white or grey, olive-green
      StreakStreak entities, recognized using a custom trained NER model
          Streak noteOriginal streak note from the source
          Grey to white
          Lustre
          Vitreous
          Pearly
          Fracture
          Irregular/Uneven
          Transparency
          Translucent
          Opaque
          Luminescence
          Non-fluorescent
          Tenacity
          brittle
          Hardness
          5—6
          Measured density
          3.2—3.9
          Calculated density
          3.189