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nepheline syenite |
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nepheline syeniteMedium- to coarse-grained igneous rock, a member of the alkali-syenite group, which consists largely of feldspar and nepheline. Nepheline syenite from Canada is used to replace feldspar in the manufacture of ceramic and glass products. nepheline syenite [′nef·ə‚lēn ′sī·ə‚nīt] (petrology) A phaneritic plutonic rock with granular texture, composed largely of alkali feldspar, nepheline, and dark-colored materials. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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