A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Barite and anhydrite |
|---|---|
| Description | This sample, about 15 cm wide, contains both barite (BaSO4) and anhydrite (CaSO4). They are difficult to distinguish because they are similar in color. The barite is harder and has a slightly glassy appearance. This sample formed by precipitation from water. Originally it probably contained barite and gypsum (CaSO4ยท2H2O), but dewatering changed the gypsum to anhydrite. |
| Photographer | Nessa Eull. 2001-06-04. |
| Collection | University of North Dakota Mineralogy Collection #890. |
| Key words | barite, anhydrite, gypsum |
| Tech details | 736 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 578 |
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