Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay
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Plane-Polarized Light

Crossed Polarizers

A plane-polarized view of stilpnomelane. Although similar in many ways to biotite, it lacks mottling and is never greenish in color.

STILP-P1.JPG (81752 bytes)

The same field in crossed polarizers. The dark colors are not anomalous interference colors but are due to the very dark brown color of much of the stilpnomelane.

STILP-X1.JPG (87187 bytes)

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Created 16 December 1999, Last Update 16 December 1999

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