Quartz-feldspar porphyry. Geological specimen collected during Scott's British Antarctic Expedition 1910-1913 (also known as the Terra Nova expedition

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Quartz-feldspar porphyry. Geological specimen collected during Scott's British Antarctic Expedition 1910-1913 (also known as the Terra Nova expedition). This is a form of igneous rock - created through the cooling of lava or magma - composed of large-grained crystals in a more finely grained material.

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Size: 3095px × 2823px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: black--white, chemical, chemistry, chloride, electron, food, micrograph, mineral, monochrome, salt, scanning, sea, sem, sodium