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A Geoscience Digital Image Library

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TitleSodalite syenite, Bancroft, Ontario, Canada
DescriptionSyenite is a type of intrusive igneous rock containing abundant alkali feldspar, and usually minor quartz and plagioclase. One or more mafic minerals, and a number of other interesting minerals including sodalite may be present as well. This specimen contains conspicuous blue sodalite and white-pink K-feldspar. White plagioclase and black biotite are also present but are more difficult to see. This specimen is 8 cm across.
LocationCanada ▹ Ontario. Near Bancroft.
PhotographerMike Davis. 2001-04-24.
CollectionWard’s Collection of Classic North American Rocks,#114.
Key wordssodalite, syenite, Canada, Ontario, Bancroft
Tech details617 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number380