[ Top ] [ Japanese ]

Haycockite

Year of discovery: 1972 (Mooihoek Farm, South Africa), 1981 (Japan)

Locality list: A locality of haycockite

• Cu₄Fe₅S₈
• [Cu²⁺₄][Fe²⁺₅][S₈]

• Class: Talnakhite group
• Class: Sulfide

• Color: Yellow
• Tarnish: Not tarnish
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Twin: {103}

• Hardness: 4.5
• Density: 4.3

• System: Orthorhombic, Pseutotetragonal
• Group: 222, P222
• Lattice: a=10.7, b=10.7, c=31.6

Etymology: M.H. Haycock, Canadian mineralogist