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Rickardite

Year of discovery: 1903 (Good Hope mine, USA), 1937 (Japan)

Locality list: 6 localities of rickardite

• Cu₇Te₅
• [Cu₇][Te₅]

• Class: Telluride

• Color: Reddish purple
• Tarnish: Dark red
• Streak: Red
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Massive, Porous

• Cleavage: No
• Hardness: 3.5
• Density: 7.5

• System: Orthorhombic
• Lattice: a=4.0, b=19.9, c=12.2

Etymology: Thomas Arthur Rickard (1864-1953), British mining engineer