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Photographic gallery.  Thousands of particles under the microscope.

Glass Fiber From a Natural Gas Fireplace

In this photograph glass fibers that have crystallized and smaller glass fibers that have not crystallized are both evident. This sample was collected from a natural gas fireplace. Fibers like these were found on living room surfaces in this home.

Transmitted Off Crossed Circular Polarized Light Illumination

Definition/Function:

Some formulations of glass fiber can begin to crystallize and become very fragile over time at elevated temperatures.

Significance in the Environment:

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