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Definition of Agpaite
1. Noun. (minerology) Any of various peralkaline igneous rocks, typically nepheline syenite or phonolite. ¹
¹ Source: wiktionary.com
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1. Noun. (minerology) Any of various peralkaline igneous rocks, typically nepheline syenite or phonolite. ¹
¹ Source: wiktionary.com