noun
red and white-speckled silica
A mineralogical term for a type of silica stone with red and white speckles. Used in geology, lapidary, or industrial contexts.
この地域では赤白珪石が採掘されている。
Red and white-speckled silica is mined in this region.
Compound of 赤 (red), 白 (white), and 珪石 (silica stone). The exact historical derivation is uncertain; the spelling is conventionally associated with the mineral's appearance.