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Hedleyite

Year of discovery: 1945 (Goodhope mine, Canada), 1971 (Japan)

Locality list: 8 localities of hedleyite

• Bi₇Te₃
• [Bi³⁺₇][Te₃]

• Class: Telluride

• Color: Silver white
• Tarnish: Black
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Platy

• Cleavage: Perfect on {0001} (1 plane)
• Hardness: 2
• Density: 8.9

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=4.5, c=119.0

Etymology: Hedley district, Canada