Unveiling The Hardness Of Limestone: A Detailed Exploration
Limestone, composed mainly of calcite, ranks 3 on the Mohs hardness scale, meaning it resists scratching from a fingernail but yields to a copper penny or steel knife. The Mohs scale measures mineral hardness by comparing it to ten reference minerals. Limestone’s hardness arises from its closely packed calcite crystals. A simple scratch test can…