Cobalt is a relatively rare element, which takes the 32nd place on earth in distribution of elements. It is mainly found in copper ores of Katanga in Zaire as well as in Pyrites of Ontario in Canada. The evident glitter of some parts of these ores pretended to contain silver, copper or tin, but didn’t forward any precious metal when dressed and washed. Therefore the ancient miners believed in a specter called “imp” — in German called “Kobold”.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
- Cross Sectional Epidemiological Study on Cobalt Excretion in Urine of Children in Areas with Different Air Pollution
- Springer Berlin Heidelberg