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 …

白榴石（leucite）是指晶体属四方晶系的架状结构硅酸盐矿物。 与长石的化学成分相似的矿物叫作似长石，白榴石就是一种典型的似长石。 白榴石只产在火成岩中，它是含钾的铝硅酸盐矿物。

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. …

白榴石（英語： Leucite ）是 似長石類的造岩礦物之一，含不飽和二氧化矽，及鉀和鋁的硅酸盐矿物（KAlSi 2 O 6 ）。 具有立方二十面體(cubic icositetrahedra)結晶型，大衛布魯斯特爵士(Sir …

2023年4月23日 · Leucite is a feldspathoid mineral in group of tectosilicate. It is a rock forming mineral include potassium and aluminium tectosilicate, formula is K [AlSi2O6].Specimens can …

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 …

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 …

leucite /ˈluːsaɪt/ 1.N a grey or white mineral consisting of potassium aluminium silicate: a source of potash for fertilizers and of aluminium. Formula: KAlSi2O6 白榴石 [1]

Leucite, one of the most important feldspathoid minerals, a potassium aluminosilicate (KAlSi2O6). It occurs only in igneous rocks, particularly potassium-rich, silica-poor, recent lavas. Some …

Leucite. Comments: Large single crystal of dark gray leucite. Location: Roccamonfina, Caserta Province, Campania, Italy. Scale: 20x20x20 mm. © John Betts - Fine Minerals