Geology

Geology

The scientific study of the origin, history, and physical features of the earth.

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Geology > Minerals

tantalite

Geology; Minerals

The mineral group tantalite ((Fe, Mn)Ta 2 O 6 ) is the primary source of the chemical element tantalum. It is chemically similar to columbite, and the two are often grouped ...

arsenolite

Geology; Minerals

Arsenolite is an arsenic mineral, chemical formula As 2 O 3 . It is formed as an oxidation product of arsenic sulfides. Commonly found as small octahedra it is white, but ...

aubertite

Geology; Minerals

Aubertite is a mineral with the chemical formula CuAl(SO 4 ) 2 Cl·14H 2 O. It is colored blue. Its crystals are triclinic pedial. It is transparent. It has vitreous luster. It is ...

bastnäsite

Geology; Minerals

The mineral bastnäsite (or bastnaesite) is one of a family of three carbonate-fluoride minerals, which includes bastnäsite-(Ce) with a formula of (Ce, La)CO 3 F, bastnäsite-(La) ...

bonaccordite

Geology; Minerals

Bonaccordite is a rare mineral discovered in 1974. Its chemical formula is Ni 2 FeBO 5 and it is a mineral of the ludwigite group. It usually crystallizes in long, cylindrical ...

clathrate compound

Geology; Minerals

A clathrate is a chemical substance consisting of a lattice that traps or contains molecules. The word clathrate is derived from the Latin clatratus meaning with bars or a ...

cordierite

Geology; Minerals

Cordierite (mineralogy) or iolite (gemology) is a magnesium iron aluminium cyclosilicate. Iron is almost always present and a solid solution exists between Mg-rich cordierite and ...