As-Cu, Chalcogen, Mechanical properties

• As-Cu-H-O
• As-Cu-Se
• As-Cu-O
• As-Cu-S
• As-Cu-Fe-H-O
• elastic moduli
• isothermal bulk modulus
• hardness
• microhardness
• Mohs hardness
• transitional
• metalloid
• pnictogen
• chalcogen
• monoclinic
• triclinic
• orthorhombic
• cubic
• tetragonal