A carbon-hydrogen mineral. Other carbon-hydrogen minerals include: dinite, evenkite, fichtelite, hartite, idrialite, kratochvílite, 'phylloretine', ravatite, simonellite, "voltzite" (carbon-hydrogen sulfur), and not IMA-accepted adamantane and naphthalene.

Mindat notes the main structural motif is an aromatic phenanthrene moiety (compare ravatite) with attached axial methyl group and a disordered propen-2-yl (methylvinyl) terminal group.