Science

Alluaivite is an exceedingly rare mineral of the eudialyte group, with complex formula written as Na19(Ca, Mn)6(Ti, Nb)3Si26O74Cl·2H2O. It is named after Mt. Alluaiv in…

Allophane is amorphous to poorly crystalline hydrous aluminum silicate clay mineraloid. Its chemical formula is Al2O3·(SiO2)1.3-2·(2.5-3)H2O. It is not Radioactive. Since it has short-range atomic…

Alloclasite [(Co, Fe)AsS] is a sulfosalt mineral. It is a member of the arsenopyrite group. It is the most abundant arsenic mineral and the primary ore…

Alleghanyite is a moderately rare humite mineral with formula Mn5(SiO4)2(OH)2, belonging to the nesosilicates class. It is a mineral consisting of a pink basic silicate…

Sum of First n Natural Numbers Natural Numbers are the positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well. Let S…

Allargentum is a rare silver antimonide. It is a mineral from the class of antimonides, a superclass of sulfides and sulfosalts (sometimes ascribed to the…

Allanpringite is a phosphate mineral named after Australian mineralogist Allan Pring, South Australian Museum. It was named to honor Australian mineralogist Dr. Allan Pring. Allanpringite…

The arithmetic mean, also called the average or average value, is the quantity obtained by summing two or more numbers or variables and then dividing…

Allanite also called orthite, is a sorosilicate group of minerals within the broader epidote group that contain a significant amount of rare-earth elements. This rare earth…

Allactite (Formula: Mn7(AsO4)2(OH)8) is a rare arsenate mineral of metamorphosed manganese zinc ore deposits. It is a mineral consisting of a brownish red basic manganese…

Allabogdanite is a very rare phosphide mineral with formula (Fe, Ni)2P, found in 1997 in a meteorite. It is not Radioactive. It was described as…

Arithmetic Progression In mathematics, an arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is…