leucite

Etymology
From.

Noun

 * 1)  A mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, leucite is a potassium feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, leucite weathers rapidly and can only be seen as inclusions in freshly broken rock.
 * 2)  A leucoplast.

Translations

 * Catalan: leucita
 * Finnish: leusiitti
 * French:
 * Spanish: leucita