Magnesium carbonate, MgCO3, is an inorganic salt that is a colourless or white solid. Several hydrated and basic forms of magnesium carbonate also exist as minerals.
Climber Jan Hojer blows surplus chalk from his hand. Boulder World Cup 2015
Magnesite is a mineral with the chemical formula MgCO3. Iron, manganese, cobalt, and nickel may occur as admixtures, but only in small amounts.
Magnesite crystals from Brazil (11.4 × 9.2 × 3.6 cm)
Difference between cryptocrystalline and crystalline magnesite.
Polished and Dyed magnesite beads
Magnesite of Salem