Salt. Dark field light micrograph of sodium chloride crystals,the common salt. This is a white crystalline compound widespread in nature as a solid (rock salt),around margins of salt lakes and in solution (about 3%) in seawater. Other metals are present in the raw material such as calcium,iron and magnesium. These are often removed by precipitation before the salt is sold. Salt is used as a food seasoning and preservative,and as a raw material in industrial processes such as in glass and soap making. Magnification: x60 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 5412 px × 4300 px |
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Property Release : | Non requis |
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