Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
[001] good, [210] distinct
Perfect on {001}, good on {210}, poor on {010}
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references