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plagioclase
pla·gi·o·clase
[
pláyjee ə klàyss,
pláyjee ə klàyz
]
noun
Definition:
feldspar:
a feldspar consisting of sodium and calcium aluminum silicates
[
Mid-19th century. <plagio- + Greek
klasis
"breaking"
]
pla·gi·o·clas·tic
[
plàyjee ə klástik
]
adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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