Trilithionite

phyllosilicate

polylithionite

Formula: KLi1.5Al1.5(Si3Al)O10F2
Phyllosilicate (sheet silicate), mica group, forms a series with polylithionite
Streak: White
Colour: Pink-violet
Environments

Pegmatites

Trilithionite is a rare lithium-bearing mineral.

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