Virgilite

Naturally occurring high-temperature solid solution between beta-quartz and spodumene (LiAlSi2O6).

History

Activities related to discovery and approval of the group members

Structural context

Virgilite
Crystal System hexagonalCrystal Class hexagonal trapezohedralSpace Group P6222
a5.132—5.226 (5.198)
b5.132—5.226 (5.198)
c5.454—5.475 (5.463)
alpha90
beta90
gamma120
volume124.41—129.259 (127.8392)

Based on 5 measurements

Chemical context

Stoichiometric formulas

Virgilite
mindat.org
  • March 13, 2023LiAlSi2O6Ideal formula; real formula is that of a solid-solution series.
IMA
  • March 13, 2023LiAlSi2O6
mineralogy.rocks
  • Aug. 30, 2022LiAlSi2O6

Elements recorded on EPMA

5
Al
5
Li
5
O
5
Si
1
Fe
1
P

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • colourless
Color noteOriginal color note from the source
Colourless
Lustre
Vitreous
Transparency
Transparent
Calculated density
2.46