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A white, yellowish, or brown mineral, magnesium carbonate, MgCO3, used in the manufacture of magnesium oxide and carbon dioxide.
(Minerals) a white, colourless, or lightly tinted mineral consisting of naturally occurring magnesium carbonate in hexagonal crystalline form: a source of magnesium and also used in the manufacture of refractory bricks. Formula: MgCO3
[C19: from magnesium + -ite1]
a mineral, magnesium carbonate, MgCO3, usu. occurring in white masses: a source of magnesium oxide.
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|Noun||1.||magnesite - a white mineral consisting of magnesium carbonate; a source of magnesium|
atomic number 12, magnesium, Mg - a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition