Chalcopyrite (copper iron sulfide) is an important ore of copper.
Chromite (iron magnesium chromium oxide) is the main ore of chromium and is also used as a refractory material.
Diamond (a carbon allotrope) is mined for its high value as a gemstone, but it is also an excellent abrasive.
Dolomite (calcium magnesium carbonate) is used as an ornamental stone and for cement manufacture.
Fluorite (calcium fluoride) is used to make opalescent glass, enamels for cooking utensils, and hydrofluoric acid, which etches glass.
Galena (lead sulfide) is a common ore of lead.
Gypsum (calcium sulfate dihydrate) is a constituent of blackboard chalk, cement, plaster, paint filler, pharmaceuticals, toothpaste, and more. It is also a calcium additive in breads and cereals.
Hematite (iron oxide) is the main ore of iron.
Mica (a group of silicates) is useful for making capacitors and electrical insulators.
Orthoclase feldspar (potassium aluminum silicate) is used to manufacture porcelain and is a component of scouring powder.