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nepheline syenite

   Also found in: Wikipedia 0.03 sec.

nepheline syenite

Medium- 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.


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? Mentioned in ? References in periodicals archive
 
High-quality nepheline syenite is good for thermoplastics where color is important.
In addition, a nepheline syenite intrusion was located along the southern extension of the Allemand-Tasiat zone in the l'Eau Claire Lake area (Fig.
This statistical market research report covers feldspar, leucite, nepheline and nepheline syenite.
 
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