felsite

[ fel-sahyt ]

noun

1. a dense, fine-grained, igneous rock consisting typically of feldspar and quartz, both of which may appear as phenocrysts.

felsite

/ fɛlˈsɪtɪk; ˈfɛlsaɪt; ˈfɛlˌstəʊn /

noun

1. any fine-grained igneous rock consisting essentially of quartz and feldspar

felsite

/ fĕl′sīt′ /

1. A fine-grained, light-colored igneous rock, consisting mainly of feldspar and quartz.

Derived Forms

• felsitic, adjective

Other Words From

• fel·sit·ic [fel-, sit, -ik], adjective

Word History and Origins

Origin of felsite¹

First recorded in 1785–95; fels(par) + -ite ¹

Word History and Origins

Origin of felsite¹

C18: fels(par) + -ite ¹

Example Sentences

The stones themselves were felsite, which abounds in the locality.

From Project Gutenberg

The rough felsite blocks of which they were composed were surprisingly large, considering the diminutive size of the cabins.

From Project Gutenberg

We found, besides, a few cores of felsite and some shapeless flakes and several fragments of large metates.

From Project Gutenberg

The blocks were lava and hard felsite, measuring one and a half to three feet.

From Project Gutenberg

Still later, dolerite sills and sheets and dikes of granophyre and quartz felsite followed in the same region.

From Project Gutenberg