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Platinum

Year of discovery: 1748 (Pinto river, Colombia), 1896 (Japan)

Locality list: 33 localities of platinum

• Pt

• Class: Platinum group
• Class: Native elements
• Soluble in: Aqua regia
• Magnetism: Paramagnetic (Weak, Fe-bearing varieties)
• Electrical: Electrostatic (Rubbed, Negative)

• Pt => Ir: Iridium, Rutheniridosmine
• Pt => Pd: Palladium
• Pt => Rh: Rhodium
• Pt => Os: Osmium
• Pt => Ru: Ruthenium
• Pt => Fe: Hexaferrum, Iron
• Pt => Ni: Nickel, Garutiite
• Pt => (Fe,Ni): Taenite
• Pt => Mo: Hexamolybdenum

• Color: Gray, Dark gray
• Streak: Gray
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Cubic
• Twin: {111}

• Cleavage: No
• Hardness: 4-4.5
• Density: 18

• System: Cubic
• Group: m3m, Fm3m
• Lattice: a=3.9

Etymology: Plata (Silver) in Spanish

Synonym: Native platinum