Science

Goldmanite is a green or greenish-brown silicate mineral of the garnet group with a chemical formula of Ca3(V3+, Al, Fe3+)2(SiO4)3. It is an isometric-hexoctahedral mineral…

Goethite is an iron-bearing hydroxide mineral of the diaspore group. It is found in soil and other low-temperature environments. It is a dark or yellowish-brown…

Equality of Complex Numbers A Complex Number is a combination of a Real Number and an Imaginary Number. A complex number is a number that…

Gmelinite-Na is one of the rarer zeolites but the most common member of the gmelinite series, gmelinite-Ca, gmelinite-K and Gmelinite-Na. It is closely related to…

Godovikovite is a rare sulfate mineral with the chemical formula: (NH4)Al(SO4)2. Aluminum can partially be substituted by iron. Hydration of godovikovite gives the ammonium alum,…

Glaucophane is the name of a mineral and a mineral group belonging to the sodic amphibole supergroup of the double chain inosilicates. Glaucophane is named…

Glauconite is an iron potassium phyllosilicate (mica group) mineral of characteristic green color with very low weathering resistance and very friable. It is a greenish…

Glaucodot is a cobalt iron arsenic sulfide mineral with formula: (Co, Fe)AsS. The cobalt: iron(II) ratio is typically 3:1 with minor nickel substituting. It is…

Glaucochroite is a calcium manganese nesosilicate mineral with formula: CaMnSiO4. It occurs in metamorphosed limestones. It is a mineral that consists of a calcium manganese…

Glauberite is a monoclinic sodium calcium sulfate mineral with the formula Na2Ca(SO4)2. It is named for the salt that helps compose its chemistry called “Glauber’s…

Gismondine is a mineral with the chemical formula CaAl2Si2O8·4(H2O). It is a zeolite or hydrated alumino-silicate. It is a native hydrated silicate of alumina, lime,…

Gilalite is a copper silicate mineral with a chemical composition of Cu2Si6O17·7(H2O). It is a monoclinic mineral containing copper, hydrogen, oxygen, and silicon. It was…