Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
{110} Distinct, {001} Indistinct, {100} Indistinct
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Distinct on {0001} imperfect on {11 2 0}
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.