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Arsenolamprite

• As

• Class: Native elements
• Surface turns black by oxidization under ambient condition.

• Polymorph: Arsenic (Hexagonal), Pararsenolamprite (Orthrhombic)

• As => Sb: Antimony
• As => SbAs: Stibarsen

• Color: Silver white
• Tarnish: Black, Dull luster (Readily in the air)
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Perfect (1 plane)
• Hardness: 2
• Density: 5.4

• System: Orthorhombic
• Group: mmm, Bmab
• Lattice: a=3.6, b=4.5, c=11.0