[ Top ] [ Japanese ]

Valleriite

Year of discovery: 1870 (Aurora mine, Sweden), 1965 (Japan)

Locality list: 13 localities of valleriite

• (Fe,Cu)₄Mg₃S₄(OH)₆
• (Fe,Cu)₄(Mg,Al)₃S₄(OH)₆
• 4[(Fe²⁺,Cu²⁺)][S]^2-,3[Mg²⁺][(OH)₂]^2-

• Class: Sulfide - Hydroxide
• Magnetism: Paramagnetic

• (Fe,Cu) => Fe: Tochilinite
• (Fe,Cu) => (Fe,Ni): Haapalaite
• (Fe,Cu) => V_0.5: Yushkinite

• Color: Dark yellowish brown
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Foliated

• Cleavage: Perfect on {0001} (1 plane)
• Hardness: 1-1.5
• Density: 3.1

• System: Hexagonal
• Lattice: a=3.8, c=34.1

Etymology: Goron Wallerius (Vallerius) (1683-1742), Swedish economic geologist