Bismuth
is a chemical element in the periodic
table that
has the symbol Bi and atomic number 83. This heavy, brittle,
white crystalline
trivalent poor metal has a pink tinge and chemically resembles
arsenic and antimony. Most diamagnetic of all metals, bismuth
has the lowest thermal conductivity of all the elements except
mercury. Lead-free bismuth compounds are used in cosmetics and
in medical procedures. Though virtually unseen in nature, high-purity
bismuth can form into distinctive hopper crystals. These colorful
laboratory creations are typically sold to hobbyists. Crystals
can be grown from pure bismuth in lab conditions.
It
is found in pegmatites, greisens ans hydrothermal in ore
veins together with chalkopyrite, arsenopyrite, löllingite,
nickeline, breithauptite and many other minerals.