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Cadmium: Difference between revisions
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== Occurrences == | == Occurrences == | ||
[[File:Cadmium Smithsonite.jpg|150px|left|Cadmium Smithsonite]] | [[File:Cadmium Smithsonite.jpg|150px|left|thumb|Cadmium Smithsonite]] | ||
Cadmium is a fairly [[rare element]]. Its abundance in the [[lithosphere]] is approximately 0.5 parts per million in the [[earth's crust]]. No samples of cadmium have ever been found in large quantities, and there is no [[ore]] that is mined solely for recovering cadmium. [[Greenockite]] (cadmium sulfide) is the compound with the most significant traces of cadmium, and occurs chiefly as a yellow stain or coating on zinc sulfide. Nearly all major zinc deposits contain cadmium in varying amounts, with the concentrates containing a maximum of about 1%.<ref name=facts>[http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e04820.html Occurrences] Unknown author, fis.uc.pt, Accessed November 19th, 2010.</ref> | Cadmium is a fairly [[rare element]]. Its abundance in the [[lithosphere]] is approximately 0.5 parts per million in the [[earth's crust]]. No samples of cadmium have ever been found in large quantities, and there is no [[ore]] that is mined solely for recovering cadmium. [[Greenockite]] (cadmium sulfide) is the compound with the most significant traces of cadmium, and occurs chiefly as a yellow stain or coating on zinc sulfide. Nearly all major zinc deposits contain cadmium in varying amounts, with the concentrates containing a maximum of about 1%.<ref name=facts>[http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e04820.html Occurrences] Unknown author, fis.uc.pt, Accessed November 19th, 2010.</ref> | ||
