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  • Leucite - Wikipedia
    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 KAlSi 2 O 6 [4] Crystals have the form of cubic icositetrahedra but, as first observed by Sir David Brewster in 1821, they are not optically isotropic, and are
  • Leucite: Mineral information, data and localities. - mindat. org
    From the Greek "leucos," for white, in allusion to its common colour Leucite is common in some volcanic rocks in which it crystallises with a cubic crystal structure at high temperature (ca 900°C)
  • Leucite | Physical - Optical Properties, Uses, Occurrence More. . .
    Leucite is a rather rare mineral, occurring only in igneous rocks, usually in the recent lavas; rarely observed in deepseated rocks Found in rocks in which the amount of silica in the magma was insufficient to combine with the potassium to form feldspar
  • Leucite | Volcanic, Igneous, Crystalline | Britannica
    leucite, one of the most important feldspathoid minerals, a potassium aluminosilicate (KAlSi 2 O 6) It occurs only in igneous rocks, particularly potassium-rich, silica-poor, recent lavas
  • Leucite: The mineral leucite information and pictures
    Leucite is a member of the feldspathoid group, forming directly from cooling lava in volcanic rock It forms in low- silica environments where little Quartz is present When Leucite forms at high temperatures, it crystallizes as isometric crystals in trapezohedral crystal form
  • Leucite - Clark Science Center
    Leucite's low birefringence, crystal habit and twinning differentiate it from analcime and microcline Analcine also has higher indices of refraction and microcline has greater birefringence and lower relief
  • 40 Facts About Leucite
    Leucite is a rare mineral found in volcanic rocks, with a unique crystal structure and important applications in ceramics and fertilizer production Its name comes from the Greek word "leukos," meaning white
  • Leucite Mineral Data
    Leucite Comments: Large single crystal of dark gray leucite Location: Roccamonfina, Caserta Province, Campania, Italy Scale: 20x20x20 mm © John Betts - Fine Minerals
  • LEUCITE (Potassium Aluminum Silicate) - Amethyst Galleries
    Uses: mineral specimen and as a minor source of potassium and aluminum Leucite is a popular and interesting mineral Its name comes from the greek word for "white" in allusion to its typical color At high temperatures, leucite is isometric and will form the isometric trapezohedron crystal form
  • Leucite - Encyclopedia. com
    leucite An important feldspathoid mineral KA1Si 2 O 6; sp gr 2 5; hardness 5 5–6 0; tetragonal; normally white or grey; vitreous lustre; crystals form very characteristic tetragonal trioctohedra; cleavage imperfect {110}; occurs in potassium-rich rocks which may be silica deficient, such as leucite basanites, leucite tephrites, lamproites





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