A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Hexagonal biotite crystals showing good cleavage |
|---|---|
| Description | These hexagonal biotite crystals, K(Mg,Fe)3AlSi3O10(OH)2, show excellent basal cleavage, which reflects their layered atomic arrangement. They are about 6 cm in longest dimension. |
| Location | Canada ▹ Ontario. Near Bancroft. |
| Photographer | Dexter Perkins. 2000-11-29. |
| Collection | University of North Dakota Mineralogy Collection. |
| Key words | biotite, hexagonal, crystal, cleavage, basal cleavage, Ontario, Canada |
| Tech details | 119 KB. Hand specimen. Provia E6 film, Canon A1 with macro lens, 1350dpi. |
| GeoDIL number | 6 |
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