Template:Ekanite

From The Gemology Project
Revision as of 11:10, 10 September 2007 by Doos (talk | contribs) (data by Chaman Golecha (id: 93))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Ekanite
This data needs to evaluated
Chemical composition ThCa2Si8O20
Crystal system Tetragonal
Habit Elongated, pebbles.
Cleavage None
Hardness 6 - 6.5
Optic nature Uniaxial -
Refractive index 1.560 - 1.596
Birefringence 0.001-0.008
Dispersion Low
Specific gravity 3.28
Lustre Vitreous