Bismuth has long been thought to be unstable on theoretical grounds, but not until 2003 was this demonstrated when researchers at the Institut d'Astrophysique Spatiale in Orsay, France measured the alpha emission half-life of Bi-209 to be 1.
Highly refined bismuth forms these interesting "hopper" crystals when grown under laboratory conditions. The colors are formed by a thin oxidation layer.
right - Native BISMUTH
Needle's Eye, near Dalbeattie, Kirkcudbright.
Platy aggregates embedded in annabergite-rich matrix.
(view c.7x5mms).
The native semi-metals include arsenic (As), antimony (Sb), and bismuth (Bi), as well as the less common elements selenium (Se) and tellurium (Te).
The best old tableware was made of an alloy containing copper, bismuth, antimony and no lead. It was known as hard or plate pewter, as opposed to lay pewter (tin and 15-20 per cent lead) and trifle pewter (tin and perhaps 4 per cent lead).
Pewter is an metal alloy that is composed mostly of tin combined with antimony, bismuth, copper, and/or silver (the formulation varies quite a bit). When pewter is polished it has a silvery lustre. Most pewter is over 90 percent tin.
Original term applied to zinc and/or bismuth. Loose term applied to high zinc alloys. Also used to describe high zinc brass rods used as brazing filler metals.
Spill ...
Pewter is an alloy of low melting point metals including Tin, Lead, Antimony, Bismuth and sometimes a bit of Silver or Copper. U.S. manufacturer's are required by law to make Lead free Pewter.
A rare form of gold, where the black coloration is due to traces of bismuth.
Bretton Woods Agreement (1944) ...
There are different alloys for different melting points. Soft solders melt at a low heat and usually contain lead, tin or bismuth. Hard solders are alloys of gold, silver or brass and melt when the work is red hot.
Some of the clear liquid is removed and combined with ammonia (ammonium hydroxide). If the solution turns blue, this indicates the presence of copper. If fakes form, this indicates the presence of lead, though this might also suggest that bismuth, ...
Four of these metals, arsenic, antimony, zinc and bismuth, were discovered in the thirteenth and fourteenth centuries, while platinum was discovered in the 16th century.
The different aspects of this ore are elaborately arranged and exhibit tremendous amount of luster. Associated minerals with which cassiterite ores are generally found are Tourmalines, Molybdenite, Bismuthinite, Topaz, Fluorite, and Wolframite.
sulfosalts Group of sulfides that contain one or more true metals, sulfur, and either the semi-metals antimony, arsenic, or bismuth. They are generally soft, have a metallic luster, and are heavy and uncommon.
 See also: Metal, Lead, Mineral, Element, Silver
  
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