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Leucite, the Glossary

Leucite (from the Greek word leukos meaning white) is a rock-forming mineral of the feldspathoid group, silica-undersaturated and composed of potassium and aluminium tectosilicate KAlSi2O6.^[1]

22 relations: Abraham Gottlob Werner, Aluminium, Boracite, Crystal, Crystal twinning, David Brewster, DK (publisher), Feldspathoid, Gerhard vom Rath, Goniometer, Hermann–Mauguin notation, Italy, Mineral, Mohs scale, Monoclinic crystal system, Orthorhombic crystal system, Potassium, Relative density, René Just Haüy, Rock (geology), Silicate mineral, Tetragonal crystal system.
Feldspathoid
Minerals in space group 88

Abraham Gottlob Werner

Abraham Gottlob Werner (25 September 174930 June 1817) was a German geologist who set out an early theory about the stratification of the Earth's crust and propounded a history of the Earth that came to be known as Neptunism.

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Aluminium

Aluminium (Aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13.

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Boracite

Boracite is a magnesium borate mineral with formula: Mg3B7O13Cl.

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Crystal

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

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Crystal twinning

Crystal twinning occurs when two or more adjacent crystals of the same mineral are oriented so that they share some of the same crystal lattice points in a symmetrical manner.

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David Brewster

Sir David Brewster KH PRSE FRS FSA Scot FSSA MICE (11 December 178110 February 1868) was a Scottish scientist, inventor, author, and academic administrator.

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DK (publisher)

Dorling Kindersley Limited (branded as DK) is a British multinational publishing company specialising in illustrated reference books for adults and children in 63 languages.

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Feldspathoid

The feldspathoids are a group of tectosilicate minerals which resemble feldspars but have a different structure and much lower silica content.

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Gerhard vom Rath

Gerhard vom Rath (20 August 1830 – 23 April 1888), was a German mineralogist, born at Duisburg in Prussia.

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Goniometer

A goniometer is an instrument that either measures an angle or allows an object to be rotated to a precise angular position.

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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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Italy

Italy, officially the Italian Republic, is a country in Southern and Western Europe.

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Mineral

In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.

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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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Monoclinic crystal system

In crystallography, the monoclinic crystal system is one of the seven crystal systems.

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Orthorhombic crystal system

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

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Potassium

Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number19.

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Relative density

Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material.

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René Just Haüy

René Just Haüy FRS MWS FRSE (28 February 1743 – 1 June 1822) was a French priest and mineralogist, commonly styled the Abbé Haüy after he was made an honorary canon of Notre Dame.

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