7" Tall Arizona Petrified Wood Bookends

This is a gorgeous pair of vibrantly colored bookends made from Late Triassic aged, Arizona Petrified wood. The bookends have been polished on the outer face and have brilliant red, yellow and orange colorations. Exceptional polishing work on this pair.

The vibrant coloration is due to the contaminating minerals in the silica which replaced the original wood structure. For example pinks and reds are due to hematite, a form of oxidized iron. This is similar petrified would which is found in the Petrified Forest National Park. The petrified forest encompasses nearly 100k acres and this wood comes from land outside of the park.

The petrified wood from the extinct conifer Araucarioxylon arizonicum which happens to be the state fossil of Arizona. The petrified wood of this tree is frequently referred to as "Rainbow wood" because of the large variety of colors some specimens exhibit. The red and yellow are produced by large particulate forms of iron oxide, the yellow being limonite and the red being hematite. The purple hue comes from extremely fine spherules of hematite distributed throughout the quartz matrix.

Araucarioxylon arizonicum is estimated to have grown more than 150 feet high and dominated the tropical forests in what is now Arizona nearly 225 million years ago.


Araucarioxylon arizonicum is estimated to have grown more than 150 feet high and dominated the tropical forests in what is now Arizona nearly 225 million years ago.
DETAILS
SPECIES
Araucarioxylon arizonicum
LOCATION
Arizona
FORMATION
Chinle Formation
SIZE
7" tall, 5.8" deep, 1.75" wide
CATEGORY
ITEM
#36669
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