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A Geoscience Digital Image Library

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TitleMicaceous sandstone, Portland, Connecticut
DescriptionThis sample of sandstone contains abundant mica flakes that give it a sparkly appearance. The micas include muscovite and biotite, some of which has altered to chlorite. The red color comes from hematite cement between grains.
LocationUSA ▹ Connecticut. Near Portland.
PhotographerDarla Sondrol. 2001-05-16.
CollectionWard’s University Rock Collection #140.
Key wordssandstone, Connecticut, mica
Tech details1.46 MB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens.
GeoDIL number468