Polarised light micrograph of twinned feldspar phenocrysts in andesite matrix. Actual size of section is 12 x 18 mm.

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Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, andesite, carlsbad, crystal, crystalline, crystallography, earth, feldspar, geological, geology, host, light, lm, micrograph, microscopy, phenocryst, phenocrysts, polarise, polarized, rock, sciences, twin, twinned, twinning, twins