Elemental Platinum

Chabaneau removed impurities from platinum ore, including gold, mercury, lead, copper, and iron, leading him to believe the result to be of elemental origin, an incorrect assumption due to the fact that the ore still contained the yet-undiscovered platinum group metals. Chabaneau finally succeeded in producing 23 kilograms of pure, malleable platinum by hammering and compressing the sponge form while white-hot, even though he was initially confused by the variable properties of what he originally thought was an element. While a platinum-iridium ore was malleable, a platinum-osmium ore was volatile by comparison.

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