Leucite /(lū"sīt)/

Leu·cite

Leucite

n.
  1. A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash KAlSi2O6. It is found in the volcanic rocks of Italy, especially at Vesuvius. (Min.)
  2. A leucoplast. (Bot.)