1.) Get rid of acne scars overnight naturally fast using Baking Soda: Baking soda can be used to get rid of acne scars naturally fast. Mix one teaspoon of baking soda with 3 teaspoons of water to make a paste. Apply this all over your face on the scarred areas.
Calcite is a mineral and limestone is a sedimentary rock that contains calcite.imestone usually is composed of finer grained material of calcite origin, such as sea shells, or precipitates of calcite origin. Limestone will effervesce in slightly acidic solutions such as vinegar because of the chemical reaction of calcium carbonate with acid.
Jupiterimages/Photos.com/Getty Images. Limestones are a class of sedimentary rocks composed of the same mineral, calcite, which is made from calcium carbonate, or CaCO3. Despite this similarity in composition, however, not all limestone rocks are the same. Chalk is actually a special form of limestone that exhibits some differences from other rocks in the same class.