出典:Wiktionary
From molybdenum + -ite.
molybdenite (countable かつ uncountable, 複数形 molybdenites)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/01 20:33 UTC 版)
Molybdenite is a mineral of molybdenum disulfide, MoS2. Similar in appearance and feel to graphite, molybdenite has a lubricating effect that is a consequence of its layered structure. The atomic structure consists of a sheet of molybdenum atoms sandwiched between sheets of sulfur atoms. The Mo-S bonds are strong, but the interaction between the sulfur atoms at the top and bottom of separate sandwich-like tri-layers is weak, resulting in easy slippage as well as cleavage planes.