A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Barite “roses” from Belle Fourche, South Dakota, USA |
|---|---|
| Description | Barite (BaSO4) and selenite CaSO4•2H2O, a variety of gypsum) both can precipitate in soft sediments (or sedimentary rocks) to form roses (flower or medallion shaped aggregates). The two minerals can be distinguished because barite has greater hardness and higher specific gravity. |
| Location | USA ▹ South Dakota ▹ Butte. Near Belle Fourche. |
| Photographer | Darla Sondrol. 2001-06-04. |
| Collection | University of North Dakota Mineralogy Collection #877. |
| Key words | barite, selenite, gypsum |
| Tech details | 405 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 573 |
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