UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
{010} Perfect, {001} Distinct
Perfect on {010}, good on {100}
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Be 2BO 3(OH)Ulrich Henn and Claudio C.