Petrified Palmwood Cabachon Selection - State Stone of Texas
Beautiful Texas shaped cabachons featuring a variety of agatatized palmwood, probably from from east Texas counties, cut in a number of orientations to show wood grain.
These cabachons were cut and polished by Adolph Krchnak, a member of the Austin Gem and Mineral Society.
Additional Information: Specimens from the Oligocene epoch (34 - 23 mya) can be collected from many scattered sites in east Texas and western Louisiana. Fossils found near fossil palmwood include corals, sponges, and mollusks, indicating that the palms grew along prehistoric beaches. For millions of years, the Gulf Coast shoreline has been moving farther south. Petrified palmwood includes a group of fossil woods that contain prominent rod-like structures within the regular grain of the silicified wood. Depending upon the angle at which they are cut by fracture, these rod-like structures show up as spots, tapering rods, or continuous lines. The rod-like structures are sclerenchyma bundles that comprise part of the woody tissues that gave the wood its vertical strength.