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dacite

noun da·cite \ ˈdāˌsīt \

Definition of dacite

plural -s
: an extrusive rock that is sometimes partly glassy and is composed of plagioclase and quartz with biotite, hornblende, or pyroxene
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dacitic

\(ˈ)dā¦sitik\ adjective

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Origin and Etymology of dacite

German dazit, from Dazien Dacia + German -it -ite

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