[ Top ] [ Japanese ]

Aschamalmite

Year of discovery: 1983 (Ascham Alp, Austria)

• Pb₆Bi₂S₉
• Pb_6-3xBi_2+xS₉
• [Pb²⁺_6-3x][Bi³⁺_2+x][S₉]^18-

• Class: Heyrovskýite (Heyrovskyite) subgroup < Lillianite group < Large 2D fragment Pb sulfosalts < Sulfosalt class
• Class: Sulfosalt
• Stable below 350 degree C.

• Color: Lead gray
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: {001} Perfect (1 plane)
• Hardness: 3.5
• Density: 7.3

• System: Monoclinic
• Group: 2/m, B2/m
• Lattice: a=13.7, b=4.1, c=31.4, β=90.9