Titanite [SEP] named after
Titanite
Titanite, or sphene (from the Greek "sphenos" (σφηνώ), meaning wedge), is a calcium titanium nesosilicate mineral, CaTiSiO. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium.
Nomenclature.
The International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) adopted the name titanite and "discredited" the name sphene as of 1982, although commonly papers and books initially identify the
Blairmorite
Blairmorite is a very rare porphyritic volcanic rock characterized by dominant analcime phenocrysts in a matrix of analcime, sanidine and alkalic pyroxene with accessory titanite, melanite and nepheline. It is a leucocratic variety of analcimite (a foidite). Blairmorite has also been described as an analcime-rich variety of phonolite. 
It was named after the community of Blairmore in southwestern Alberta, Canada.
This extrusive igneous rock is known from only two geological formations worldwide. The foremost blairmorite occurrence is the Crowsnest Formation in the Canadian province