Template:POTD/2012-03-05
Tungsten rods with evaporated crystals, partially oxidized with colorful tarnish, as well as a 1 cm3 tungsten cube for comparison. Tungsten is a hard, rare metal under standard conditions when uncombined and is found naturally on Earth only in chemical compounds. Its chemical symbol is W, which represents its alternative name, "wolfram".Photo: Alchemist-hp