Cadmium - Periodic Table of Videos
This article is incomplete since I did not have a group of students assigned to it in the Spring of 2013.
[From Wikipedia] Cadmium makes up about 0.1 ppm of the Earth's crust. Compared with the more abundant 65 ppm zinc, cadmium is rare. No significant deposits of cadmium-containing ores are known.Greenockite (CdS), the only cadmium mineral of importance, is nearly always associated withsphalerite (ZnS). This association is caused by the geochemical similarity between zinc and cadmium which makes geological separation unlikely. As a consequence, cadmium is produced mainly as a byproduct from mining, smelting, and refining sulfidic ores of zinc, and, to a lesser degree, lead and copper. Small amounts of cadmium, about 10% of consumption, are produced from secondary sources, mainly from dust generated by recycling iron and steel scrap. Production in the United States began in 1907, but it was not until after World War I that cadmium came into wide use. One place where metallic cadmium can be found is theVilyuy River basin in Siberia.
Section heading[]
Write the first section of your page here.
Section heading[]
Write the second section of your page here.