„As mineralogy constitutes a part of chemistry, it is clear that this arrangement [of minerals] must derive its principles from chemistry. The most perfect mode of arrangement would certainly be to allow bodies to follow each other according to the order of their electro-chemical properties, from the most electro-negative, oxygen, to the most electro-positive, potassium; and to place every compound body according to its most electro-positive ingredient.“
— Jöns Jacob Berzelius Swedish chemist 1779 - 1848
Jöns Jacob Berzelius, An Attempt to Establish a Pure Scientific System of Mineralogy (1814), trans. J. Black, 48.