矿油精

• 石(stone; rock)RADICAL
• 广(broad; large)PHONETIC

A mine is a place where stone is extracted from a large area of earth deep within a mountain.

• 氵(water; liquid)RADICAL
• 由(from; due to; oil (phonetic))PHONO-SEMANTIC

Oil is a liquid that flows from a natural source.

• 米(rice)RADICAL
• 青(green and pure; clear and clean)PHONO-SEMANTIC

Rice pounded clean and polished becomes pure and clear as the blue-green color of jade.