A Geoscience Digital Image Library

TitleKyanite from Minas Gerias, Brazil
DescriptionThe blue bladed mineral is kyanite, Al2SiO5; the surrounding material is almost all quartz. Kyanite, a common metamorphic mineral has two polymorphs (different minerals with the same composition): andalusite and sillimanite. Kyanite forms at higher pressures than andalusite or sillimanite. This specimen is 19 cm across.
LocationBrazil ▹ Minais Gerais
PhotographerTwyla Baker. 2001-06-28.
CollectionUniversity of North Dakota Mineralogy Collection.
Key wordskyanite, Brazil
Tech details714 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number940