Template:POTD/2012-06-17
A crystalline fragment of an ingot of zinc (upper left), a sample of sublimed-dendritic zinc, and a 1 cm3 cube for comparison. Zinc (or "spelter") is the 24th most abundant element in the Earth's crust. It is an essential mineral for humans; zinc deficiency affects about two billion people in the developing world and is associated with many diseases.Photo: Alchemist-hp