Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.