also: ふせき
noun
axinite
A mineral name; used in geology and mineralogy contexts.
斧石は接触変成岩中に見られることがある。
Axinite can sometimes be found in contact metamorphic rocks.
The kanji 斧 (axe) and 石 (stone) describe the mineral's axe-head-like crystal shape. The reading おのいし is the native Japanese reading of these characters; ふせき is the Sino-Japanese reading.