felsite

/fel-sahyt/US // ˈfɛl saɪt //UK // (ˈfɛlsaɪt) //

燧石,燧石矿,长石,长石岩

Definitions

n.名词 noun

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

The stones themselves were felsite, which abounds in the locality.
The rough felsite blocks of which they were composed were surprisingly large, considering the diminutive size of the cabins.
We found, besides, a few cores of felsite and some shapeless flakes and several fragments of large metates.
The blocks were lava and hard felsite, measuring one and a half to three feet.
Still later, dolerite sills and sheets and dikes of granophyre and quartz felsite followed in the same region.