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Guilleminite, the Glossary

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 chemist and mineralogist.^[1]

Acicular (crystal habit)

Acicular, in mineralogy, refers to a crystal habit composed of slender, needle-like crystals.

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Barium

Barium is a chemical element; it has symbol Ba and atomic number 56.

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Crystal habit

In mineralogy, crystal habit is the characteristic external shape of an individual crystal or aggregate of crystals.

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Cuprosklodowskite

Cuprosklodowskite is a secondary uranium mineral formed by alteration of earlier uranium minerals. Guilleminite and Cuprosklodowskite are Uranium(VI) minerals.

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Democratic Republic of the Congo

The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, Congo-Zaire, or simply either Congo or the Congo, is a country in Central Africa.

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Hermann–Mauguin notation

In geometry, Hermann–Mauguin notation is used to represent the symmetry elements in point groups, plane groups and space groups.

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Katanga Province

Katanga was one of the four large provinces created in the Belgian Congo in 1914.

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Mohs scale

The Mohs scale of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material.

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Musonoi Mine

The Musonoi mine is a set of open-cut pits near Kolwezi from which copper and other metals have been extracted since the 1940s.

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Orthorhombic crystal system

In crystallography, the orthorhombic crystal system is one of the 7 crystal systems.

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Oxide mineral

The oxide mineral class includes those minerals in which the oxide anion (O2−) is bonded to one or more metal alloys.

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Radioactive decay

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation.

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