From prehistoric civilization to princess and platinum, the protagonist of pop music, the so-called "new metal", its story is far longer than you think. Meteorites contain platinum, and the earliest record can be traced back to 2 billion years ago, when a meteor hit the earth. Since then, this rare and fascinating treasure has appeared sporadically throughout history, and sometimes suddenly disappeared for centuries, which is both confusing and attracting people who meet unexpectedly.
The ancient Egyptians, the ancient Inca civilization and the Spanish conquerors all encountered platinum. Later, it reappeared in the18th century, which made kings and alchemists equally crazy. 19 and the 20th century, platinum was more and more admired and loved by people. Today, it has become the precious metal of choice for movie stars and elites.
Platinum features:?
Platinum group elements, together with gold and silver, are collectively called precious metal elements in nature. In mineral classification, platinum group minerals belong to natural platinum subgroup, including natural elemental minerals such as iridium, rhodium, palladium and platinum. Platinum group minerals are all equiaxed, with few single crystals and occasionally cubic or octahedral fine crystals.
Generally, it is an irregular granular, dendritic, grape-like or massive aggregate. The color and stripes are silvery white to steel gray; Metallic luster, opaque. Cleavage, serrated fracture, ductile. It is a good conductor of electricity and heat. The natural element platinum is a rare precious metal element in the earth's crust, and its symbol is Pt. The mineral name of natural platinum is natural platinum. It is a simple mineral of natural element platinum, and its chemical formula is Pt. The specific gravity of natural platinum is15.5 ~ 21.5; The refractive index is 56.5 ~ 60.0.