ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Arkose, polarised light micrograph. Arkose is a detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. Arkose is generally formed from the weathering of feldspar-rich igneous or metamorphic, most commonly granitic, rocks. This specimen is from Achiltibuie, Scotland. Horizontal object size of this section: 3.0 mm.
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