Idrialite

Idrialite, or idrialine, is a soft, orthorhombic hydrocarbon mineral with chemical formula: C₂₂H₁₄. It is usually greenish yellow to light brown in color with bluish fluorescence.

Raman spectroscopy studies indicate that it may be a mixture of complex hydrocarbons including benzonaphthothiophenes (chemical formula: C₁₆H₁₀S) and dinaphthothiophenes (chemical formula: C₂₀H₁₂S).