Specimen #2219

Name: Petrified Wood

Type: Petrified Wood

Locality: Near Winslow, Navajo Co, Arizona, USA

Favorite? N

Fluorescent? N

Size: 6.7 x 7.2 x 6.3 cm


Acquired: 2011-02-07

Source: Inn Suites Dealer, Tucson

Label: N

Comment: Interesting color for petrified wood. One surface polished. Araucarioxylon arizonicum is the scientific name for this extinct species of conifer. The grain of the bark is very visible and sharp. This is a rare kind of petrified wood that has 2% of Chromium in it so it has a very distinct green color, impregnating the whole piece. It is only known to be found in one place in the world: Arizona. Description of another piece: This polished on one side, green Triassic-aged petrified wood slab gets its color from chromium, and in fact the wood contains 2% chromium, the same element that gives emerald their green color. The rare green wood comes from a small isolated deposit in the Chinle Formation near Winslow. It is a natural hygrometer, the higher the humidity, the darker deep green it turns. Old-time, seldom available material, desirable for lapidiary use.

Minerals: Chromium (Cr)

There are 2 pictures on file


Petrified Wood, Arizona - 6.7 x 7.2 x 6.3 cm


Petrified Wood, Arizona - 6.7 x 7.2 x 6.3 cm