A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Calcite (nail head spar) from the Black Hills, South Dakota, USA |
|---|---|
| Description | Calcite, CaCO3, is one of the world's most common minerals. It can have many different appearances. When crystals are well formed and somewhat clear, it is called spar. Nail head spar is one variety, another common one is dog tooth spar. The names reflect the shapes of the crystals. |
| Location | USA ▹ South Dakota. Black Hills. |
| Photographer | Darla Sondrol. 2001-06-12. |
| Collection | University of North Dakota Mineralogy Collection #2323. |
| Key words | calcite, nail head spar, Black Hills, South Dakota |
| Tech details | 426 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 726 |
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