Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
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.