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Photographic gallery.  Thousands of particles under the microscope.
Burnt Roofing Under the Microscope

Charred Tar Roofing

This is from an environmental tapelift collected in a home near a catastrophic house fire. Tar roofing may contain over 40% clay minerals. When charred there is a high percentage of minerals below about 2 micrometers in diameter.

Reflected Darkfield Illumination

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