1 янв 1735 г. - Platinum

Описание:

The platinum ore is crushed and milled, which increases the surface area of the metal and making it easier to extract all the valuable metals. Froth flotation is a method of separating materials on the basis of their physical properties, for instance, affinity for water or density.

-Discovered during the contemporary history modern (metal age). It describes the historical period from approximately 1945 to the present.

platinum is used for :
-jewellery
- converters for cars, trucks and buses.

platinum is rarer than gold. It is said that it is so rare, in fact, that all of the Platinum ever mined could fit into your living room.