Phlogopite mica from Perth Ontario Canada
Size-
6cm x 5.1cm x 2.5cm
Weight-
65g
You will receive the item in the photo
Phlogopite is a magnesium rich mineral in the mica group. It typically forms in contact metamorphic marbles and specific silica poor ultramafic igneous rocks.
Mineral class- silicates
Crystal system-monoclinic
Rock formation-
Contact metamorphism: it commonly crystallizes in metamorphosed silica rich dolomitic marbles and limestones,often associated with minerals like diopside,spinel and Grossular garnet.
Ultramafic and alkaline igneous rocks: As a primary magmatic mineral,phlogopite forms at great depths and high vapour pressures. It appears as phenocrysts or within the ground mass in rocks like kimberlites,lamproites and carbonatites.