Definitions for ulexiteyuˈlɛk saɪt
This page provides all possible meanings and translations of the word ulexite
Random House Webster's College Dictionary
a whitish mineral, hydrous sodium calcium borate, NaCaB5O9∙8H2O, occurring in arid regions as rounded masses of radiating crystal needles.
Origin of ulexite:
1865–70; after George L. Ulex, German chemist
A white mineral with triclinic crystals, NaCaBOu00B78HO.
a mineral occurring in white rounded crystalline masses. It is a hydrous borate of lime and soda
Ulexite, sometimes known as TV rock, is a mineral occurring in silky white rounded crystalline masses or in parallel fibers. The natural fibers of ulexite conduct light along their long axes, by internal reflection. Ulexite was named for the German chemist Georg Ludwig Ulex who first discovered it. Ulexite is a structurally complex mineral, with a basic structure containing chains of sodium, water and hydroxide octahedra. The chains are linked together by calcium, water, hydroxide and oxygen polyhedra and massive boron units. The boron units have a formula of B5O6(OH)6 and a charge of −3. They are composed of three borate tetrahedra and two borate triangular groups. Ulexite is found in evaporite deposits and the precipitated ulexite commonly forms a "cotton ball" tuft of acicular crystals. Ulexite is frequently found associated with colemanite, borax, meyerhofferite, hydroboracite, probertite, glauberite, trona, mirabilite, calcite, gypsum and halite. It is found principally in California and Nevada, USA; Tarapacá Region in Chile, and Kazakhstan. Ulexite is also found in a vein-like bedding habit composed of closely packed fibrous crystals.
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