metamorphic rock, anhydrite, basalt, gravel, lapilli, halite, dolerite, claystone, calcium sulphate, hornblende, greywacke, esker, kyanite, igneous rock, tephra, marl, bentonite, pyrites, evaporite, posthole, microfossil, eclogite, escarpments, pontil, kaolinite, hummocks, tufa, volcanic rock, anorthosite, amphibolite, outwash, cherty, muskeg, clayey, lamellae, calcium oxide, ironbark, caliche, syrtis major, karri, argillaceous, roadbeds, azurite, lava, firebrick, corrugation, sphagnum, mylonite, glacial boulder, fumaroles, albite, covellite, carbides, rills, granulates, spinifex, wollastonite, sandstone, limestone, lithic, tremolite, calcine, tarmacadam, feldspar, laths, chrysocolla, schists, stalactite, slabbing, emery cloth, chippings, phyllosilicate, argillite, boulders, greisen, montmorillonite, massifs, colluvium, dissolver, quartzite, aluminosilicate, creosoted, leucoxene, huon pine, pipestone, rocks, cumulonimbus cloud, realgar, hogback, tussock, pyroxene, diabase, loess, douglas fir, dolomites, talus, phyllite, glasslike, schistose, octahedron, haematite, scurf, pumice, tuff, brick, cinder, rock, scoriae, slag, amber, ash, bricks, cinders, crystalline, glaze, chalk, purple, stone, coral

basic slag

scum

dross, slag