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A Geoscience Digital Image Library

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TitleGabbro, Duluth, Minnesota
DescriptionThis gabbro, an intrusive igenous rock from Duluth, Minnesota, is mostly composed of labradorite. Augite is found between plagioclase grains, and also as mantles on altered brownish olivine. This is 9 cm across.
LocationUSA ▹ Minnesota. Near Duluth.
PhotographerDarla Sondrol. 2001-02-15.
CollectionWard’s Collection of Classic North American Rocks #30.
Key wordsgabbro, Minnesota
Tech details1.12 MB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number94