Texas Geologic Map in Stone Texas Geologic Map in Stone 26.75″ diameter, 2017 Slabs of: travertine, limestone, marble, sodalite syenite, red jasper, gabbro. Minerals: flint, chrysocolla & malachite, pyrite, moss agate, celestite, fossilized dolomite, topaz. Fossils: shark’s tooth, gastropod, petrified palm