Phyllosilicate (sheet silicate), mica group
Specific gravity: 3.05
Colour: White, yellowish, colourless, brownish
Solubility: Insoluble in acids; easily fusible (Dana).
Common impurities: Fe,Mg,Na,K
Bityite is a mineral containing both lithium and beryllium that occurs sparingly as late-stage crystal crusts in lithium pegmatite veins
(Webmin, Dana, HOM).
At Londonderry, Western Australia bityite is associated with with tourmaline, albite, beryl, bavenite, columbite and cassiterite (Dana, HOM).
At the type locality, Maharitra, Ibity, Vakinankaratra, Madagascar, bityite is a late stage mineral in a granite pegmatite (Mindat). Associated minerals include pink tourmaline, quartz, lepidolite and albite (Dana, Mindat, HOM).
At the Strickland quarry, Connecticut, USA, bityite is associated with calcite and albite (HOM).
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