Geographic Minerals

Barrerite is a tectosilicate mineral and a member of the zeolite family. It is one of the rarer zeolites. It was named for Richard Barrer,…

Bararite is a natural form of ammonium fluorosilicate (also known as hexafluorosilicate or fluosilicate). It is a trigonal-hexagonal scalenohedral white mineral containing fluorine, hydrogen, nitrogen,…

Baotite, formula- [Ba4Ti4(Ti, Nb, Fe)4(Si4O12)O16Cl] is a rare mineral recognized as having a unique four-fold silicate ring. Crystals are tetragonal, though commonly deformed to the…

Banalsite is a rare barium, sodium aluminum silicate mineral with formula: BaNa2Al4Si4O16. Banalsite is a tectosilicate of the feldspar group. It is not radioactive. It…

Balangeroite is found in one of the most important chrysotile mines in Europe, the Balangero Serpentinite. Hence, it is usually mistaken as an asbestiform in…

Bakerite is a rare boro-silicate that was discovered in Death Valley, California and is still only found in abundance there. It is the common name…

Baddeleyite is a rare zirconium oxide mineral (ZrO2 or zirconia), occurring in a variety of monoclinic prismatic crystal forms. It is transparent to translucent, has…

Babingtonite is a calcium iron manganese inosilicate mineral with the formula Ca2(Fe, Mn) FeSi5O14(OH). It is a member of the Babingtonite group of minerals. It…

Babefphite is a rare phosphate mineral with the general formula BaBe(PO4)(F, OH). The name is given for its composition (Ba meaning barium, Be meaning beryllium,…

Aventurine is a form of quartz, along with carnelian, amethyst, and citrine; characterized by its translucency and the presence of platy mineral inclusions that give…

Illite is a non-expanding clay crystalline mineral. It is a group of mica-type clay minerals widely distributed in marine shales and related sediments. The chemical…

Auerlite is a rare North Carolina mineral variety, remarkably rich in thoria, named after Carl Auer von Welsbach, the inventor of the Welsbach incandescent gas…