osumilite

osumilite

[ä′sü·mə‚līt]
(mineralogy)
(K,Na)(Mg,Fe2+)2(Al,Fe3+)3(Si,Al)12O30·H2O A mineral that crystallizes in the hexagonal system and is commonly mistaken for cordierite.
References in periodicals archive ?
Milarite, a member of the osumilite group, is a hydrous silicate of potassium, calcium, aluminum and beryllium: K[Ca.
Relationship to other species: A member of the Osumilite group.