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A Geoscience Digital Image Library

19.jpg
TitleMuscovite-biotite granite,Merrimack County, New Hampshire
DescriptionThis is a light-colored medium-grained plutonic igneous rock composed of feldspar (microcline and sodic plagioclase), quartz, muscovite, and biotite. It is about 9 cm across.
ChronostratigraphyLate Paleozoic
LocationUSA ▹ New Hampshire ▹ Merrimack. Near Concord.
PhotographerDexter Perkins. 2001-01-24.
CollectionWard’s Collection of Classic North American Rocks #2.
Key wordsgranite, New Hampshire
Tech details936 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number19