Impressum/Contact | About me
Agate
Agate is modification of the quartz, because it has not got big crystals, but only microscopical crystals. The chemical
formula is SiO2. The crystal system is trigonal and the hardness is 7. Agate is unregular. He exists in many
colors. Often we can find agate stones which are hollow and inside we can find Amethyst crystals. Often an agate consists of
many color layers which are arranged radiale. Agate contains onyx, sardonyx, eye agate, moss agate, dendrite agate, flame agate, fire agate and many more. In Brazil and Uruguay we can find most agate, but in other parts of the world
there is also agate. Because of this ring structure agate is good for ashtrays, like petrified wood, because so we can see
the whole stone. Agate is used for chains and jewels. In former times in Egypt and also in other parts of the world different things were made of agate.
|
Data about Agate
| | Chemical formula |
SiO2 |
|---|
| Mineral class |
oxides |
|---|
| Crystal system |
trigonal |
|---|
| Hardness |
7 |
|---|
| Density |
2.6 g/cm3 |
|---|
| Color |
many colors |
|---|
| Line color |
white |
|---|
| Gloss |
glass gloss, fat gloss |
|---|
| Break |
shell |
|---|
| Fissileness |
none |
|---|
Author and Webmaster: Lukas Czarnecki
If you have got questions about agate you can send me an e-mail under the following adress:
webmaster@hpwt.de
Back to Minerals page
Back to Main page
Last Update: 07.10.2006
