Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)
Uneven, Subconchoidal, Uneven, Subconchoidal, Conchoidal, Brittle
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.
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references