16 S Sulfur
Nonmetal, mass: 32.065 u, 4 stable isotopes (32, 33, 34, 36), abundance rank (earth/space): 15/10Click image to magnify. Natural sulfur crystal, 5 grams. Original size in cm: 2 x 2 x 3
Sulfur is an element which is known since ancient times. It sometimes naturally occurs in its elemental form and as such often is emitted in volcanic eruptions. Sulfur has a complex chemistry and is essential to life. On the other hand, it has some very toxic and environmentally hazardous compounds. Notable here are hydrogen sulfide, which gives rotten eggs their smell and sulfur dioxide and trioxide, which, when dissolved in water, give sulfurous acid and sulfuric acid.
Left: Chunk of pure sulfur, 1 x 2 cm, 1-2 grams.
Right: Small sulfur splints.
Left: Sulfur field on the volcanic island Nea Kameni in Greece.
Right: Natural pyrite, an iron-sulfur compound (FeS2), 17 grams, edge length 1.5-2 cm. The common mineral forms cubic crystals. It is often mistaken for gold and therefore is also named fool's gold.
Lapis lazuli, a complex mineral mixture. The blue color is caused by S3- radicals. 115 grams, 5 x 7 cm.
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Page last changed on March 05. 2016
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