A Geoscience Digital Image Library

TitleHexagonal biotite crystals showing good cleavage
DescriptionThese 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.
LocationCanada ▹ Ontario. Near Bancroft.
PhotographerDexter Perkins. 2000-11-29.
CollectionUniversity of North Dakota Mineralogy Collection.
Key wordsbiotite, hexagonal, crystal, cleavage, basal cleavage, Ontario, Canada
Tech details119 KB. Hand specimen. Provia E6 film, Canon A1 with macro lens, 1350dpi.
GeoDIL number6