A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Aragonite from near Alston Moore, England |
|---|---|
| Description | Aragonite is a polymorph of calcite, meaning it has the same composition but different structure and crystal shape. Single crystals of aragonite have orthorhombic habits (related to a shoe-box shape) but sometimes aragonite is twinned (multiple intergrown crystal domains) and has a hexagonal appearance, as in this sample. Reentrant angles, formed at twin boundaries can be seen in this photo (but it takes very discerning vision). This specimen is 4 cm across. |
| Location | England. Near Alston Moore. |
| Photographer | Darla Sondrol. 2001-06-12. |
| Collection | University of North Dakota Mineralogy Collection #663. |
| Key words | aragonite, England |
| Tech details | 474 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 725 |
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