Siderite is a mineral composed of iron carbonate (FeCO).

Gypsum is a soft mineral composed of calcium sulfate dihydrate.

For example, the fertilizer potash is a naturally occurring mineral composed of nearly pure potassium chloride (KCl).

Phosphophyllite is a rare mineral composed of hydrated zinc phosphate.

Aluminosilicate minerals are minerals composed of aluminium, silicon, and oxygen, plus countercations.

Rutile is a mineral composed primarily of titanium dioxide, TiO.

Kalinite is a mineral composed of hydrated potassium aluminium sulfate (a type of alum).

Sal ammoniac is a rare mineral composed of ammonium chloride, NHCl.

Dmitryivanovite is a natural mineral composed of calcium, aluminium and oxygen, with the molecular formula CaAlO.

Vermiculite is a naturally occurring mineral composed of shiny flakes, resembling mica.