A solid, naturally occurring inorganic substance
Any of a group of minerals which occur as colloidal crystals in clay. They are all hydrated aluminosilicates having layered crystal structures
Water occurring in nature with some dissolved salts present, often bottled and sold as drinking water
A substance resembling matted wool and made from inorganic mineral material, used chiefly for packing or insulation
A trace element required for nutrition
North American term for white spirit.
A constituent mineral present in small quantity and not taken into account in identifying a rock
(Especially in Africa) a mineral mined in an area of armed conflict and traded illicitly to finance the fighting