How to read: ゆけつがん
Pronunciation: 
Names and idioms with total stroke of 25:
紅燈 蔵匿 江羅 佑衣満 識此
Names and idioms similar to 油頁岩:
岩開 油面 油橋 乕岩 白雲岩
Yojijukugo(idioms with 4 Kanji characters) including 油頁岩:
枯木寒岩 油断大敵 禾黍油油
Idioms including 油頁岩:
油を絞る 油を売る 油が切れる