Woodworthia sp. Triassic Holbrook, Arizona A well-preserved specimen of a very rare variety of natural color green petrified wood of the species woodworthia, an ancient spiny wood. The green coloration is due to traces of the mineral chromium. This very rare petrified wood comes from a small isolated deposit in northern Arizona. The log section measures 6 ¾ x 3 ½ x 2 ½ in; together with a cross-section slice of wood, polished on one side, diameter 3 ½ in. (2)
Woodworthia sp. Triassic Holbrook, Arizona A well-preserved specimen of a very rare variety of natural color green petrified wood of the species woodworthia, an ancient spiny wood. The green coloration is due to traces of the mineral chromium. This very rare petrified wood comes from a small isolated deposit in northern Arizona. The log section measures 6 ¾ x 3 ½ x 2 ½ in; together with a cross-section slice of wood, polished on one side, diameter 3 ½ in. (2)
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