Limestone - Formation, Composition, Types and Uses | Earth …
https://eartheclipse.com/science/geology/limestone.html
WEBAll limestones contain at least 50% calcium carbonate by weight. Limestones also contain a considerable amount of magnesium carbonate (MgCO3), also known as dolomite. Minor constituents include clay, iron carbonate, siderite, sulfate, feldspar, pyrite, and quartz. Pure limestone is white or almost white.
DA: 36 PA: 49 MOZ Rank: 46