ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Quartzite mineral, polarised light micrograph. The pattern seen here is due to the recrystallisation and intergrowth of the quartz at high pressure and temperature when buried at great depths. This specimen is from Skye, Scotland. Horizontal object size of this section: 3.0 mm.
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