Answer :
Limestone is to rock as calcite is to mineral. Limestone : rock :: calcite : Mineral.
Limestone is a type of rock primarily made up of the mineral calcite, which is a form of calcium carbonate (CaCO3). Calcite is also found in various organisms, like sea urchins, and it can be present in sedimentary rocks such as limestone and dolostone. Both calcite and dolomite are carbonate minerals frequently occurring in sedimentary rocks formed from the remains of marine organisms.
