珪けい岩がん

け

い

が

ん

Meanings

1

quartzite

A hard metamorphic rock composed mainly of quartz, used in construction and industry.

珪けい岩がんは非ひ常じょうに硬かたい岩がん石せきです。
Quartzite is a very hard rock.
この地ち域いきでは良りょう質しつな珪けい岩がんが採とれる。
High-quality quartzite is mined in this region.