We found one dictionary that defines the word feldspatholithic:

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1. feldspatholithic: Wiktionary

Definitions from Wiktionary (feldspatholithic) ▸ adjective:  Containing rocks and feldspar. ▸ Words similar to feldspatholithic ▸ Usage examples for feldspatholithic ▸ Idioms related to feldspatholithic ▸ Wikipedia articles (New!) ▸ Popular nouns described by feldspatholithic ▸ Words that often appear near feldspatholithic ▸ Rhymes of feldspatholithic ▸ Invented words related to feldspatholithic