1. a white or gray mineral consisting of potassium aluminum silicate, found in volcanic rocks
Usage: geology

Examples

• The volcanic rock contained crystals of leucite.
• Leucite is commonly found in potassium-rich lavas.
• The geologist identified leucite in the igneous rock sample.
• Leucite crystals have a distinctive trapezohedral shape.
• The mineral leucite forms at high temperatures in volcanic environments.