{001} perfect; {111} imperfect, may exhibit parting on , {011}
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references