Petrified Conifer Slab. Araucarioxylon arizonicum. Triassic. Chinle Formation

Description

Petrified Wood

Petrified Conifer Slab
Araucarioxylon arizonicum
Triassic
Chinle Formation
Arizona, USA

This remarkable slab is a cross-section of Araucarioxylon arizonicum, an extinct conifer that flourished in the Late Triassic, over 200 million years ago. Sourced from the iconic Chinle Formation in Arizona-home to some of the world's most celebrated petrified forests-this specimen preserves in exquisite detail the internal growth structure of ancient wood, now entirely replaced by mineral. The slab displays vibrant hues of reddish-pink, burgundy, and chocolate brown, with concentric growth rings clearly visible in polished cross-section. Subtle zoning of mineral infill, likely including silicates such as Quartz, Chalcedony, and Jasper, adds to its visual complexity. Veins of white and bluish-gray lend contrast and enhance the dynamic, swirling appearance. Petrified Wood of this size and coloration is increasingly rare, and this specimen is particularly well-suited for both scientific appreciation and decorative display.
Measurements: 28.00 x 22.00 x 1.25 inches (71.12 x 55.88 x 3.18 cm)

Provenance: Property of a Distinguished Southern California Collector

More Information: All items are offered "as is." While every effort has been made to accurately describe each lot, certain pieces—particularly fossils, minerals, and carvings—may exhibit minor imperfections, repairs, restorations, or natural wear consistent with age, excavation, or handling. Prospective buyers are encouraged to carefully review photographs and descriptions and to request additional condition information prior to bidding.


Estimate: $1,000 - up.

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