The immigrants who arrived in Brazil around the year 1500 were quite interested in discovering natural treasures that could mean fame and fortune. Gold, for example, was found in good quantities as well as other treasures like diamonds, rubies, sapphires, silver, etc.
Miners came in large numbers and expanded the Brazilian territory in the search for new mines as old mines decreased production. They ended up finding other minerals that at first did not interest them so much. The Brazilian subsoil hid many treasures; mineral resources that are being discovered even today.