Geographic Minerals

Haidingerite is a calcium arsenate mineral with formula Ca(AsO3OH)·H2O. It is a mineral consisting of white hydrous calcium arsenate. It was originally discovered in 1827…

Haggertyite is a rare barium, iron, magnesium, titanate mineral: Ba(Fe2+6Ti5Mg)O19 first described in 1996 from the Crater of Diamonds State Park near Murfreesboro in Pike…

Hagendorfite is an iron phosphate mineral with the chemical formula of (Na, Ca)MnFe2(PO4)3 and is named after where the mineral was discovered, Hagendorf-Süd, Bavaria, Germany.…

Garnierite is a general name for a green nickel ore which is found in pockets and veins within weathered and serpentinized ultramafic rocks. It is…

Hafnon is a hafnium nesosilicate mineral, chemical formula (Hf, Zr)SiO4 or (Hf, Zr, Th, U, Y)SiO4. It is a mineral of hafnium silicate ore, produced…

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is a soft white or grey mineral consisting…

Gwihabaite is a rare ammonium potassium nitrate mineral (NH4, K)(NO3). It is a rare ammonium potassium nitrate mineral, orthorhombic in form and colorless with a…

Guyanaite (CrOOH) is a chromium oxide mineral that forms as an intergrowth with other chromium oxide minerals known as bracewellite (CrOOH) and grimaldiite (CrOOH) as…

Gunningite is one of the minerals in the Kieserite group, with the chemical formula (Zn, Mn2+)SO4·H2O. It is rare. It is found in dry areas…

Guilleminite (Ba(UO2)3(SeO3)2(OH)4•3H2O) is a uranium mineral named by R. Pierrot, J. Toussaint, and T. Verbeek in 1965 in honor of Jean Claude Guillemin (1923–1994), a…

Gugiaite is a melilite mineral, named for the Chinese village of Gugia where it was first discovered. Its chemical formula is Ca2BeSi2O7. It is a…

Guettardite is a rare arsenic-antimony lead sulfosalt mineral with formula Pb(Sb, As)2S4. It is a monoclinic-prismatic grayish black mineral containing antimony, arsenic, lead, and sulfur.…