1989 Edition


  • D. R. Bowes
Reference work entry

Analcimite is a hypabyssal or intrusive rock composed of analcime and pyroxene (usually titanaugite) with small proportions of feldspathoids and plagioclase, and apatite, sphene and opaque oxides as accessory minerals; olivine may also be present. A monomineralic effusive rock composed entirely of analcime is termed an analcimolith . A blairmorite is composed of analcime and aegirine augite with minor proportions of nepheline, sanidine and melanite (Blairmore, Alberta, Canada).

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© Van Nostrand Reinhold 1989

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  • D. R. Bowes

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