Based on origin:
* Calcareous oolite: Limestone formed from ooids, small spherical grains of calcium carbonate.
* Chalk: A soft, fine-grained limestone formed from the accumulation of microscopic marine organisms.
* Coquina: A limestone made up of broken seashells.
* Travertine: A type of limestone formed by hot springs.
* Tufa: A porous limestone formed by precipitation from freshwater springs.
Based on composition:
* Dolomite: A limestone that contains a significant amount of dolomite mineral.
* Marl: A soft, earthy limestone containing clay.
* Shell rock: A limestone composed primarily of broken seashells.
Based on use:
* Building stone: Limestone is widely used as a building material.
* Crushed stone: Limestone is crushed for use in road construction and other applications.
* Agricultural lime: Limestone is used to neutralize soil acidity.
So, the "another name" for limestone depends on what specific aspect you're interested in.
