A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Tourmaline with muscovite |
|---|---|
| Description | Tourmaline is actually the name for a group of minerals with the similar chemical formula of AX3Y6(BO3,)3Si6O18(O,OH,F)4. Tourmalines have many unique properties such as they are piezoelectric which means that when a crystal is heated, compressed or vibrated a different electrical charge will form at opposite ends of the crystal. Conversely if an electrical potential is applied to the crystal, it will vibrate. They are also pleochroic. This sample is approximately 7 cm. |
| Photographer | Shannon Heinle. 2001-11-28. |
| Collection | University of North Dakota Mineralogy Collection. |
| Key words | tourmaline |
| Tech details | 325 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera. |
| GeoDIL number | 1856 |
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