saf-ahyuh r

Arsenopyrite is the most common arsenic mineral and gets its name from the combination of its former name: aresenical pyrites. Its color is silver-white to steel-gray on freshly broken surfaces. It yields a garlic odor when heated and the fumes can be toxic. It may tarnish to form an iridescent layer. Although arsenic has a reputation for being poisonous to humans, complex compounds are actually used in the treatment of disease caused by microorganisms.

Arsenopyrite Polished
Arsenopyrite Classification
Common Name Arsenopyrite
Species Arsenopyrite
Arsenopyrite Optical Properties
Transparency Opaque
Pleochroism None
Arsenopyrite Characteristic Physical Properties
Hardness 5.5-6
Streak Gray To Black
Specific Gravity 5.900-6.200
Toughness Poor
Luster Metallic
Stability Poor
Fracture Uneven
Cleavage Good, in one direction
Arsenopyrite Chemistry & Crystallography
Chemical Name iron arsenide sulfide
Chemical Formula FeAsS
Crystal System Monoclinic
Chemistry Classification Sulfide

Arsenopyrite Colors

  • Yellow Arsenopyrite Yellow
  • Gray Arsenopyrite Gray

Alternate Names


Countries of Origin

China; Mexico

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.