Fluorcanasite is a rare calcium, potassium, sodium fluoride silicate mineral, discovered in the Kirovsk mine's dumps, in Russia.

It is coloured amber, purple and lilac respectively along the α, β and γ optical axes.

[1] It has a barely detectable 0.77% potassium radioactivity measured by the GRapi (Gamma Ray American Petroleum Institute Units).

It consists mostly of oxygen (38.22%), silicon (25.97%) and calcium (15.44%), but otherwise contains potassium (9.04%) - which gives its radioactive attributes - fluorine (5.86%) and sodium (5.31%).

[2] It is associated with pectolite, microcline, nepheline, villiaumite, scherbakovite, rasvumite, lamprophyllite, mosandrite, molybdenite and aegirine.