Metallic- An element that reflects light (is shiny).
Non Metallic- An element that does not reflect light (not shiny).
Metals are malleable substances that are useful and valuable because they are so strong, relatively light, and can be reshaped for many purposes. The availability of metals and the methods to extract and use them have determined technological developments, as well as economic and political power for individuals and nations.
Nonmetal minerals constitutes a broad class that covers resources from gemstones to sand, gravel, salts, limestone, and soils. Sand and gravel production for road and building construction compromise by far the greatest volume and dollar value of all nonmetal mineral resources and a far greater volume than all metal ores.