苦く鉄てつ質しつ

noun which may take the genitive case particle 'no', noun

mafic

Geological term describing igneous rocks or minerals rich in magnesium and iron, typically dark-colored. Used attributively with の.

See also: 珪長質

• 玄げん武ぶ岩がんは苦く鉄てつ質しつの火か山ざん岩がんである。