Blairmorite

Blairmorite is a very rare^[1] porphyritic volcanic rock named after the community of Blairmore in southwestern Alberta, Canada.^[2][3] It is characterized by dominant analcime phenocrysts in a matrix of analcime, sanidine and alkalic pyroxene with accessory titanite, melanite and nepheline.^[4] Blairmorite has been described as a leucocratic variety of analcimite (a foidite) or as an analcime-rich variety of phonolite.^[4][5][6]

Blairmorite

Extrusive igneous rock
A specimen of blairmorite from the Crowsnest Formation. The amber mineral is analcime, the pale mineral is sanidine and the small black minerals are melanite garnet.
Composition
Primary	Analcime, sanidine, pyroxene
Secondary	Titanite, melanite, nepheline

This extrusive igneous rock is known from only two geological formations worldwide. The foremost blairmorite occurrence is the Crowsnest Formation in the Canadian province of Alberta where it is associated with agglomerates and tuffs from explosive eruptions. The other locality is the Lupata Gorge in Mozambique.^[2]