Cordieria is of vitreous lustre to matte and is of blue color; but with a blue, yellow, violet trichroism. It has an irregular, subconchoidal conchoidal fracture.
Also known as Iolite
To learn more about the Cordierite, see Mindat.org->
Cordieria is of vitreous lustre to matte and is of blue color; but with a blue, yellow, violet trichroism. It has an irregular, subconchoidal conchoidal fracture.
Also known as Iolite
To learn more about the Cordierite, see Mindat.org->