ÔÅËÜÄØÏÀÒÎÈÄÛ (ôåëüäøïàòèäû), ìèíåðàëû ãðóïïû êàðêàñíûõ àëþìîñèëèêàòîâ, íåäîñûùåííûõ êðåìíåêèñëîòîé, ê êîòîðûì îòíîñÿòñÿ íåôåëèí, ëåéöèò, ñîäàëèò è äð.  ùåëî÷íûõ ìàãìàòè÷åñêèõ ãîðíûõ ïîðîäàõ ôåëüäøïàòîèäû â êà÷åñòâå ïîðîäîîáðàçóþùèõ ìèíåðàëîâ çàíèìàþò ìåñòî ïîëåâûõ øïàòîâ.
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