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Petrified wood
Petrified wood has got the chemical formula SiO2. The hardness is about 5 to 7. This may wonder, because silicon
does not belong to elements with form organic linkages and wood. Wood is a linkage of carbone, but here we have got a long
process. At the beginning of this process solutions of silicium dioxide (chalcedone or opal) go into fallen trees and they replace the wood piece for piece. The structure of the wood stays the same and also most of the colors. Petrified wood is yellow, yellow-brown and
also grey. We can find very much Petrified wood in Holbrook in Arizona. There is a whole petrified forest. Here we can find a whole petrified forest. Petrified wood is used for several jewels. Ashtrays are a good example, because here we can see the whole cross section of a tree and even a petrified crust.
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Data about Petrified wood
| | Chemical formula |
SiO2 * nH2O |
|---|
| Mineral class |
oxides |
|---|
| Crystal system |
amorph |
|---|
| Hardness |
5 to 7 |
|---|
| Density |
1.9 g/cm3 to 2.5 g/cm3 |
|---|
| Color |
many colors |
|---|
| Line color |
white |
|---|
| Gloss |
wax gloss |
|---|
| Break |
shell |
|---|
| Fissileness |
none |
|---|
Author and Webmaster: Lukas Czarnecki
If you have got questions about petrified wood you can send me an e-mail under the following adress:
webmaster@hpwt.de
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Last Update: 03.11.2004