Strengite - Les Montmins Mine, Allier, Auvergne, France. Chemical Formula FePO4 · 2(H2O) Composition Iron phosphate, often with some aluminum - See more at: http://www.minerals.net/mineral/strengite.aspx#sthash.iAg4rS5L.dpuf
Fluorite (CaF2) Blue Fluorite with Phantom Purple - Macro view of a very small but special fluorite crystal speciment, only 1 1/4" tall, captured through the glass display case. This shows a clear blue outer row of translucent blue cubes grown over an initial purple crystal.from cobalt123. I really like blue Fluorite.