Description: 6345g 6.35kg Blue Gray Petrified Wood Round Petrified wood meaning wood turned into stone, is the name given to fossilized wood or the fossilized remains of terrestrial trees. Petrifaction is the result of a tree or tree-like plants having been replaced by stone via a mineralization process. This petrified wood is from the late Triassic period about 225 million years old (Chinle formation). At that time Arizona was near the equator on the south western edge of the super-continent of Pangea. The climate was humid and subtropical. The area was a low coastal plain resting between mountains and the sea. Size and Weight: 175x170x120mm, 6345g, 14lbs About this item: What makes petrified wood valuable? Full rounds or bark and/or skin all the way around. Most times you'll find a expensive thin slab for sale. This piece is a nice big stand up size. The color of the petrified wood is also a factor. Some colors are very rare such as blue. This one is the rare blue color with a reddish color on the rim and in the center. This is about as rare as it gets. This is one of the best petrified wood pieces we have offered. This petrified wood is about 225 million years old (Chinle formation). It lived on a coastal plain in Northern Arizona. What was the West Coast at that time was raging with volcanos. The prevailing wind dumped the volcanic ash on the area where this tree lived. There is a reason why petrified wood from Arizona is so colorful. The minerals deposited plus the ash created a soil deprived of oxygen. This decreased the decay rate or decomposition of the wood as it petrified. The bright white deposits seen on the outside is the volcanic ash. Rainbow petrified wood from Northern Arizona is unique and like no other place on earth. 1 inch = 25.4mm1 ounce = 28.4g A common question is why this area in Arizona is known for colorful petrified wood? Ash and debris from ancient nearby volcanos to the west aided in the petrification of this ancient forest. The brightest colors are obtained when metals such as copper, chromium, cobalt, iron and manganese enter the petrified wood structure. Iron is likely the most common mineral. Most common mineral is iron. Iron stains can be red, brown, orange and yellow.Copper stains petrified wood in blue or green shades.Shades of green can also be attributed to iron, copper, cobalt, chromium and nickel.Trace amounts of Uranium can be found in some yellow, brown or green petrified wood. Purple and violet color is caused by iron and manganese.Blackish dark colors may be the result of manganese and carbon.Pure silica, silicone dioxide, can be clear, white, tan, or gray.Some petrified wood can also contain white to dark shades of calcite. White color may also may be the result of weathering. Color is bleached out leaving a patina on the rock. Please contact us if you have any questions. There is a 30 Day Return Policy. Shipping is calculated and combined if more that 1 item is purchased. USPS Ground Advantage shipping option is less than USPS Priority. USPS Flat Rate shipping is also available for large heavy items if it fits in the box. Please inquire if you have questions about shipping. Thanks for shopping. Please come again.
Price: 625 USD
Location: Casa Grande, Arizona
End Time: 2025-01-05T17:56:52.000Z
Shipping Cost: 0 USD
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All returns accepted: ReturnsNotAccepted
Shape: Natural
