leucite


leucite

One of the most common feldspathoid minerals, potassium aluminosilicate (KAlSiO). It occurs only in igneous rocks, particularly potassium-rich, silica-poor, recent lavas. Some important localities include Rome, Italy; Uganda; and Wyoming's Leucite Hills. Leucite is used as a fertilizer in Italy (because of its high potassium content) and as a source of commercial alum.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on leucite, visit Britannica.com.

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