How to distinguish calcite from limestone in appearance?
Calcite is a calcium carbonate mineral, and is most commonly found in natural calcium carbonate. Therefore, calcite is a widely distributed mineral. The calcite crystal shape varied, they can be a collection of clusters of crystal, can also be a massive, granular, fibrous, stalactitic, earthy and so on. A lot of square fragments can be obtained by tapping calcite, hence the name calcite.
Limestone is short for limestone, and calcite is the main component of carbonate rock. Sometimes contain dolomite, clay mineral and detrital minerals, gray, gray, gray and black, yellow, red, brown red color, hardness is generally small, and the violent reaction of dilute hydrochloric acid.