Eucryptite

Formula:   LiAlSiO4

Origin of name:   From Greek for well concealed

 

Crystal system:   Hexagonal

Crystal class:   -3

Twinning:

Unit cell: 

 

Colour:  Colourless, white, tan

Diaphaneity:  Transparent

Luster:   Vitreous

Habit:   Crystals euhedral, to large size; massive granular aggregates

Hardness:   6.5

Specific gravity:   2.66

Cleavage:   1; {10-11} indistinct

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments:   Fluoresces pink under UV light

 

Back to Alphabetical list Colour photos Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra