K
Li
Al
Si
O
F
H
Ball and Stick Stick Spacefill Polyhedral
https://virtual-museum.soils.wisc.edu/wp-content/uploads/sites/7/2016/08/lepidolite_poly1.txt https://virtual-museum.soils.wisc.edu/wp-content/uploads/sites/7/2016/08/lepidolite_poly2.txt https://virtual-museum.soils.wisc.edu/wp-content/uploads/sites/7/2016/08/lepidolite_poly3.txt
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Lepidolite

Lepidolite, K(Li,Al)3(Si,Al)4O10(F,OH)2, has a monoclinic crystal system with a platy habit.

Highlighting Features

Plane of Si atoms
Silica tetrahedral layer
Plane of Al atoms
Lithium (Li) atoms in octahedral coordination sites
All atoms

Distribution

This clear purple mineral is used ornamentally and can be found in Czechoslovakia, U.S, Madagascar, Italy, Canada and Australia.

Guggenheim, S. 1981. Cation ordering in lepidolite type 1M from Radkovice. American Mineralogist. 66: 1221-1232.