rock, material, rocks, bedrock, minerals, state, samples, surface, surfaces, granite, specimens, shale, fragments, clay, condition, materials, loess, stone, dolomite, portions, limestone, oil, sample, clays, blocks, flows, soils, deposits, portion, coal, zone, soil, basalt, particles, sandstone, sediments, ash, ore, chalk, appearance, boulders, core, sand, grains, feldspars, specimen, wood, sherds, exposures, stones, debris, gneiss, shales, walls, basalts, marl, subsoil, strata, schist, masses, ores, glass, outcrops, feldspar, lava, silicates, drift, chert, beds, sections, sands, tiling, mass, tills, glacial, coals, interior, flint, lavas, mica, crystals, sediment, substratum, marble, mineral, slice, oils, constituents, gravel, kimberlite, igneous, formation, block

fresh, hard