Rossmanite was found in a lepidolite subtype pegmatite dike at Latovicky. It occurs as pale-pink, 1.0 cm crystals in lepidolite with other members of the tourmaline group (schorl and elbaite). Based on paragenesis and textural relations, elbaite-rossmanite is the last tourmaline to crystallize at Latovicky.
(0.59Na0.41) (Li1.15Al1.85) Al6 (Si5.89Al0.11O18) (BO3)3 [(OH)3.89F0.11]
Selway JB, Novák M, Cerný
P, Hawthorne FC (1999) Compositional evolution of tourmaline in
lepidolite-subtype pegmatites. European Journal of Mineralogy,