From The Gemology Project
Revision as of 11:47, 1 November 2006 by Africanuck (talk | contribs)
Jump to: navigation, search
Chemical composition NaCa2Si3O8(OH)
Crystal system edit me
Habit edit me
Cleavage edit me
Fracture edit me
Hardness 5
Optic nature edit me
Refractive index 1.59 - 1.63
Birefringence edit me
Dispersion edit me
Specific gravity 2.62 - 2.87
Lustre edit me
Pleochroism edit me