Most distinguishing features:Stalactitic habit, hardness (greater than that of calcite) and colour.
Industrial/economical uses:Same as calcite, however abundance is much much less than that of calcite, thus having little economic value.
Most distinguishing features:Colour is reliable, association with malachite is also indicative.
Industrial/economical uses:A minor ore of copper, also has ornamental uses. Sometimes a pigment (when powdered).
Most distinguishing features:Recognized by hardness and cleavage. Dolomite and aragonite have higher densities.
Industrial/economical uses:Used in the manufacture of portland cement (quicklime). Also used as a pharmaceutical (antacids, calcium supplements).
Other names/forms:Iceland Spar
Most distinguishing features:Hardness, crystal habit and twin striae are typical.
Industrial/economical uses:Used in the manufacture of portland cement (quicklime) and in the pharmaceutical industry.
Most distinguishing features:Harder than calcite
Industrial/economical uses:Used in manufacture of portland cement.
Most distinguishing features:Colour is primary indicator, as well as habit.
Industrial/economical uses:Used as a minor ore of copper and also has ornamental uses due to vivid green colour.
Most distinguishing features:Identified by colour and hardness.
Industrial/economical uses:Sometimes used as an iron ore. Also used in pigments where a red or brown colour is desirable.
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