Arsenopyrite

megalodon

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Jun 3, 2020
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Arsenopyrite is an iron arsenic sulfide (FeAsS). It is the most abundant arsenic-bearing mineral and the primary source of arsenic metal. It is often associated with other sulfide minerals in igneous, sedimentary and metamorphic rocks. Arsenopyrite is widely distributed but is usually overlooked due to its occurrence in small amounts. Majority of the arsenopyrite occurs in hydrothermal veins. Sometimes it contains tiny particles of gold which is rarely recovered in economic quantities.

Arsenopyrite.jpg

Arsenic is a toxic metal which is used in insecticides, herbicides, pesticides and chemical weapons. The dust, fumes and water containing even minor amounts of arsenic are harmful. The arsenic contamination in groundwater can occur due to the hazardous wastes or dissolution of arsenic from minerals.

Physical Properties
PropertyValue
CategorySulfide
Crystal SystemMonoclinic
ColorSilvery-white to steel gray.
StreakGray to black
LusterMetallic
CleavagePoor
Mohs Scale Hardness5.5 to 6
DiaphaneityOpaque
Specific Gravity5.9 to 6.2
Chemical CompositionFeAsS
Diagnostic PropertiesHigh specific gravity, silvery color on freshly broken surfaces, garlic odor when struck.
 

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