noun
microcline
A common feldspar mineral; used in geology and mineralogy.
微斜長石はカリ長石の一種です。
Microcline is a type of potassium feldspar.
From 微 (bi, 'slight') + 斜 (sha, 'oblique') + 長石 (chōseki, 'feldspar'), referring to its slightly inclined cleavage planes.