Mineral Occurrences
Metallurgy of selenium and tellurium
Article REF: M2370 V1
Mineral Occurrences
Metallurgy of selenium and tellurium

Authors : Pierre BLAZY, El-Aïd JDID

Publication date: June 10, 2008 | Lire en français

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2. Mineral Occurrences

The average levels deduced from analyses carried out on samples of igneous rock taken from the surface are 0.8 ppm for Se and 0.01 ppm for Te. For the earth's crust as a whole, the "clarke" would be 0.01 ppm for selenium and 0.001 ppm for tellurium.

2.1 Selenium

Crystallized selenium is rarely found in nature, and is only reported in deposits in special cases, such as when the redox front in uranium deposits has shifted. On the other hand, selenides can be found :

  • copper (berzelianite, Cu 2 Se; krutaite, CuSe 2 );

  • lead (clausthalite, PbSe);

  • silver (naumannite,...

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