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n.1.(Min.) A variety of albite, white and lamellar in structure.
References in periodicals archive ?
The mineral Cleavelandite, a variety of albite, was named after him.
Formation of secondary albite after K-feldspar is manifest as either fine-grained sacchroidal albite or euhedral platy cleavelandite.
The occurrence of tantalite associated with secondary albite, in part of cleavelandite habit, is typical of Ta-Nb mineralization within the pegmatite.