inertinite

noun 0.673

liptinite

noun 0.596

kerogen

noun 0.579

lignite

noun 0.573

vivianite

noun 0.561

vulcanite

noun 0.557

vitreous

noun 0.556

anthracite

noun 0.553

ringwoodite

noun 0.534

vermiculite

noun 0.534

chromitite

noun 0.532

vesuvianite

noun 0.531

vitrification

noun 0.528

biotite

noun 0.521

anthophyllite

noun 0.518

catlinite

noun 0.517

illite

noun 0.516

stishovite

noun 0.514

argillite

noun 0.514

mineral coal

noun 0.513

pyrolusite

noun 0.512

ilmenite

noun 0.509

bituminous

noun 0.508

metapelite

noun 0.508

carbonaceous chondrite

noun 0.508

tillite

noun 0.507

bronzite

noun 0.507

magnetite

noun 0.507

oil shale

noun 0.504

brown coal

noun 0.504

gilsonite

noun 0.503

rutile

noun 0.503

vimentin

noun 0.502