Rare Color Araucarioxylon arizonicum Petrified Wood Section

Name: Araucarioxylon arizonicum

Age: Late Triassic, Norian-Carnian Stage

Size (25.4 mm = 1 inch): 90 mm long by 60 mm wide by 20 mm thick; weight 144 grams

Location: Winslow, Arizona

Code: PW006

Price: $120.00 - sold


Araucarioxylon arizonicum Petrified WoodDescription: This specimen of highly-colored petrified wood from the Chinle Formation (Norian-Carnian Stage, ~225 million year old) deposits of Winslow, Arizona comes with a story. About 10 years ago, I came across a few examples of this rare material at a rock shop in southern Utah. I purchased a sample, and thought little of it. After my return home, I decided to try to obtain some larger specimens. I had been unsuccessful until a few months ago. The rich green color is the result of ~2% Chromium content. While the many types of petrified wood come in a panoply of colors, only a very few types are green; the only other known to me is found in Africa. This material comes from a small deposit near Winslow, and is not known from any other location. Araucarioxylon arizonicum is the state fossil of Arizona, and is the taxon comprising some 90% of all specimens found in the Petrified Forest National Monument. It was a coniferous tree standing some 150-200 feet tall, and some 6-8 feet in diameter. Its closest relatives today are the Monkey Puzzle Tree of South America and the Norfolk Island Pine. The rich green color is quite evident in this piece with a distinctive checkered barklike pattern.

EDCOPE Enterprises Purchase

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