Molybdenum occurs in nature chiefly as the minerals molybdenite (MoS 2) and wulfenite (PbMo04), and more rarely as molybdic ochre (Moos) and ilsemannite; it also occurs in many iron ores.
Molybdenum disulphide, MoS 2, is found as the mineral molybdenite, and may be prepared by heating the trioxide with sulphur or sulphuretted hydrogen.
A tetrasulphide, MoS 4, has also been described.
Mos, people), the great body of " faithful people" which, in nearly every various conception of the Christian Church, stands in relation to the clergy as a flock of sheep to its pastor.
7raXat6s, old, and Mos, stone), in anthropology, the characteristic epithet of the Drift or early Stone Age when Man shared the possession of Europe with the mammoth, the cave-bear, the woolly-haired rhinoceros and other extinct animals.