Fulgorite
Subject details
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| Subject: | Fulgorite |
|---|---|
| Origin: | Algeria |
| Class: | D |
| Size: | Large |
| Preparation: |
| Item Code: | MIN0176 |
|---|---|
| Kind: | Cardboard box |
| Size: | 9x13x3 (cm) |
| Size: | 3.5x5.1x1.2 (inch) |
| Serie: | None |
| Availability: | 5 |
| Price: | € 8.0 |
Didactical leaflet
Fulgorite
It took thousands of years before man could succeed in imitating what already existed in nature, that is glass. Two things are necessary for making glass: the right material and a very high temperature to melt it. Nature creates glass from volcanic lava when it cools down quickly, originating obsidian. A temperature high enough to cause the material to melt is provided also by the lightning stroke hitting the ground. This is how fulgurite is created. They have the peculiar form of little rootlike tubes, created by the current passing down through the sandy soil. On the edges there are often crestlike formations, less glassy then the fulgurite's inner part, which has been closer to the higher temperature.