Georgius Agricola was a German scientist who is also known as the father of mineralogy. He was born on March 24, 1494 and died on November 21, 1555. He furthered the study of geology in 1544 through the publication of De ortu et causis subterraneorum. In this, he criticized the theory of geology of the ancients. He also went on to propose the idea of looking for ore veins and washing the ores for precious metals such as tin and gold.