Arsenic ore
A non-metallic mineral primarily composed of arsenic sulfide. Arsenic has three allotropes: yellow, gray, and black brown. Its gray crystals are metallic, brittle, and hard. The main minerals are realgar, orpiment, and arsenopyrite; Arsenic is the main component, with a cut-off grade of 5% for the former and 3-5% for the latter; The industrial grade is 10% for the former and 5% to 6% for the latter. There are also arsenic nickel ore, arsenic antimony ore, arsenic pyroxene, orthorhombic arsenic iron ore, etc. Generally, underground mining method is used for mining, and flotation method is used for beneficiation.
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