Dolomite Powder Ultrafine −300 Mesh – 99%+ Purity Powder CaMg(CO₃)₂

Dolomite is calcium magnesium carbonate, CaMg(CO₃)₂, supplied here as an ultrafine −300 mesh powder at 99%+ purity, food grade. In ceramics it is a standard high-fire glaze flux, supplying both calcium and magnesium in one material and contributing to the soft satin and matte surfaces associated with magnesium.

Elsewhere it is used to raise soil pH and supply magnesium in agriculture, as a flux in glass and metal production, and as a mineral filler in paints, plastics and rubber. The fine grind helps it disperse evenly and stay in suspension.