noun
stone dust; feldspar dust; limestone powder
Refers to fine powder produced from stone, including feldspar and limestone, used in industrial contexts such as ceramics, glass, or construction.
石粉を混ぜて釉薬を作る。
Mix stone dust to make glaze.
この石灰石粉末は建築材料に使われる。
This limestone powder is used in construction materials.