| ALLANITES | • allanites n. Plural of allanite. • ALLANITE n. a silicate containing a large amount of cerium. |
| APHANITES | • aphanites n. Plural of aphanite. • APHANITE n. any rock of such close texture that separate minerals contained within it cannot be distinguished by the naked eye. |
| BASANITES | • basanites n. Plural of basanite. • BASANITE n. a black form of jasper or quartzite, formerly used as a touchstone. |
| CEYLANITE | • ceylanite n. (Mineralogy) A dingy blue or greyish-black variety of spinel. • CEYLANITE n. a mineral, pleonaste, a dark-green to black variety of spinel, also CEYLONITE. |
| ELVANITES | • elvanites n. Plural of elvanite. • ELVANITE n. a granular rock, also ELVAN. |
| GERMANITE | • germanite n. (Mineralogy) An isometric-hextetrahedral pinkish gray mineral containing copper, germanium, iron, and sulfur. • GERMANITE n. a complex mineral, basically copper arsenic sulphide. |
| MANGANITE | • manganite n. (Geology) a dark gray mineral of manganese, MnO(OH), found throughout North America and Europe. • MANGANITE n. an oxide of manganese, occurring in brilliant steel-gray or iron-black crystals. |
| MELANITES | • melanites n. Plural of melanite. • MELANITE n. a black variety of garnet. |
| MORGANITE | • morganite n. (Mineralogy) A gemstone of pegmatite deposits. Morganite is a transparent pink variety of beryl. • MORGANITE n. a rosy pink semiprecious gem, a variety of beryl. |
| POLIANITE | • polianite n. (Mineralogy) manganese dioxide, occurring in hard tetragonal crystals. • POLIANITE n. manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz. |
| SYLVANITE | • sylvanite n. (Mineralogy) Silver gold telluride, a soft metallic mineral ranging in colour from steely gray to almost white. • SYLVANITE n. a monoclinic telluride of gold and silver that occurs as silver or yellow crystals or masses with metallic lustre. |
| TANZANITE | • tanzanite n. A trichroic violet-blue variety of the mineral zoisite mined in Tanzania, used as a gemstone. • TANZANITE n. a gemstone that exhibits blue, violet, or greenish color depending on the polarization of the light. |
| TITANITES | • titanites n. Plural of titanite. • TITANITE n. a brown, green or yellow monoclinic mineral, calcium silicate and titanate, aka sphene. |
| TORBANITE | • torbanite n. A variety of coal, derived from colonial algae, that looks like carbonaceous shale. • TORBANITE n. a shale, almost a coal, once mined for oil at Torbane Hill in Scotland. |
| URBANITES | • urbanites n. Plural of urbanite. • URBANITE n. one who lives in a city. |
| VIVIANITE | • vivianite n. (Mineralogy) A blue, green or colourless mineral of monoclinic crystals, Fe3(PO4)2·8H2O. • VIVIANITE n. ferrous phosphate, blue by oxidation, often found coating fossil fishes and bones. |
| VULCANITE | • vulcanite n. A hard rubber made by vulcanization with sulfur; ebonite. • vulcanite n. (Mineralogy) A rare mineral, copper telluride. • VULCANITE n. hard rubber produced by vulcanizing with a large proportion of sulphur. |