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Radiant Heating Design Guide
ndoor Environmental Quality: particulate matter

This page updated last on September 09, 2010

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Native arsenic
This rare form of arsenic (As) has here formed curved and layered accretions with a dull blue black lustre and a bulbous shape on the surface. Arsenic is used mainly in insecticides and in semiconductors. This sample is from a historically famous location, the St Andreasberg mine in lower Saxony, Germany.

















Photo credit: Dirk Wiersma/Science Photo Library

Additional information:

Arsenic is a natural element found widely in the earth’s crust. It may be found in some drinking water supplies, including wells. Exposure to high levels of arsenic can cause health effects.

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