Zoning is used for differentiating isomorphous minerals, ex.

Zoning is used for differentiating isomorphous minerals, ex. Albite & anorthite.
Zoning is a scientific concept and refers to the segregation of a vast mass of land such as that of a city or a township into several zones. This is done to facilitate the proper use of land for a different purpose.
Isomorphous minerals contain different elements arranged in the same arrangement and number.