Andesite. Cut surface of amygdaloidal andesite, a type of volcanic rock formed from solidified lava. Gas bubbles in the lava (called amygdales) in thi

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Andesite. Cut surface of amygdaloidal andesite, a type of volcanic rock formed from solidified lava. Gas bubbles in the lava (called amygdales) in this sample have filled with crystalline material, creating coloured patches. Andesite is a fine- grained volcanic rock consisting of the mineral plagioclase feldspar with biotite, hornblende or pyroxene. Magnification at 35mm size.

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Size: 4899px × 3420px
Photo credit: © GEORGE BERNARD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: amygdale, amygdaloidal, andesite, earth, geological, geology, igneous, rock, rocks, science, type, volcanic