About: Blairmorite

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Blairmorite is a very rare porphyritic volcanic rock named after the community of Blairmore in southwestern Alberta, Canada. It is 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 (a foidite). Blairmorite has also been described as an analcime-rich variety of phonolite.

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  • Blairmorite is a very rare porphyritic volcanic rock named after the community of Blairmore in southwestern Alberta, Canada. It is 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 (a foidite). Blairmorite has also been described as an analcime-rich variety of phonolite. 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. (en)
  • Blairmorites são rochas vulcânicas porfiroides raras caracterizadas por ter predominância de fenocristais de analcite, na matriz de analcite, sanidina e piroxenas alcalinas, com traços de titanitas, andraditas e nefelinas. Possui esse nome em homenagem a comunidade de , no sudoeste de Alberta, Canadá. Essa rocha ígnea extrusiva é encontrada em duas formações geológicas no mundo todo. A principal ocorrência é na , situada em Alberta, onde é associado a aglomerados e tufos derivados de erupções explosivas. O outro lugar é em Moçambique. (pt)
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  • 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. (en)
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  • Blairmorite (en)
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  • Extrusive igneous (en)
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  • Volcanic rock (en)
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  • Blairmorites são rochas vulcânicas porfiroides raras caracterizadas por ter predominância de fenocristais de analcite, na matriz de analcite, sanidina e piroxenas alcalinas, com traços de titanitas, andraditas e nefelinas. Possui esse nome em homenagem a comunidade de , no sudoeste de Alberta, Canadá. Essa rocha ígnea extrusiva é encontrada em duas formações geológicas no mundo todo. A principal ocorrência é na , situada em Alberta, onde é associado a aglomerados e tufos derivados de erupções explosivas. O outro lugar é em Moçambique. (pt)
  • Blairmorite is a very rare porphyritic volcanic rock named after the community of Blairmore in southwestern Alberta, Canada. It is 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 (a foidite). Blairmorite has also been described as an analcime-rich variety of phonolite. (en)
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  • Blairmorite (en)
  • Blairmorito (pt)
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