tonalite

noun

to·​nal·​ite

ˈtōnᵊlˌīt

plural -s

1

: a granular igneous rock consisting of quartz, andesine, and small amounts of orthoclase

2

: quartz-diorite

Word History

Etymology

German tonalit, from Tonale (Pass) in the Lombard Alps + German -it -ite

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