Answer: During any type of mineral growth, atoms accumulate on crystal faces. A mineral crystal grows during mineral formation as atoms are added to its surfaces, edges and corners, the types of atoms that are added depends on the crystals growing surrounding.
Explanation: The minerals are formed of crystals, which can be microscopic (and even smaller, as in the case of chalcedony) or up to a few meters in length, such as the crystals found in the rock called pegmatite.