Arsenic is one of the semimetals/metalloids.  It has a metallic luster and bright silvery gray color on freshly broken surfaces.  Weathered, tarnished surfaces have a very dull metallic to nonmetallic luster and dark gray color.  Arsenic has a gray streak, no cleavage, and is moderately soft (H = 3.5).  Like all semimetals/metalloids, arsenic is not malleable - it breaks along fractures.


Arsenic (3.0 cm across) from Andreasberg, Harz Mountains, Germany.



Photo gallery of arsenic



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