Uses History Isotopes Glossary	by: Kati	Sources Properties Halfnium Bibliography
	How much Zirconium is in you?
	It's put in vacum cleaner tubes, and poisin ivy lotion. Zirconium is in so many things Maybe becuase it's always in motion!
Sources Zirconium is found in abudance in S-type stars and has been identified in the sun and meteorites. Analysis of lunar rock samples obtained during the various Apllo missions to the moon show a surprisingly high zirconium oxide content, compared with terrestrial rocks.		Properties Color: Grayish-white Melting Point: 1825C Boiling Point: 4377C Characteristics: Hard, Relatively inert Crystal Structure: Hexagonal Number of Isotopes: 5 Energy Levels: 2,8,18,10,2 Flamibility Class: Combustible (often at high temperatures) The inherent toxicity of zirconium compounds is low.
	Uses Zirconium has a low absorption cross-section for neutrons, and is there fore used for nuclear energy applications such as claddig fuel elements. Reactors of the commercial size, now being made, may use as much as a half-million linear feet of zirconium. It is used extensively by the chemical industry where corrosive agents are employed. Zirconium is used as a getter in vacumcleaner tubes, as an alooying agent in steel, in surgical appliances, photoflash bulbs, explosive primers, and lamp filaments. It is used in poisin iv lotions in te form of the carbonate as it combines with urushiol. With niobium, zirconium is superconductive at low temperatures and is used to make superconductive magnets, which offer ope if direct large scale generation of electric power. Zirconium oxide (zircon) has a high index of refraction and is used as a gem material. Also the impure oxide, zirdcoonia is used for laboratory crucibles that will with stand heat shock for linings of metallurgical frnaces , and by the glass and ceramic industries as a refractory metal.
History The name Zirconium is thought to have come from the Persian word Zargun, which describes the color of the gemstone now know as zircon, jargon, hyacinth, jacinth, or ligure. The mineral was not knon to contain a new element until Martin Klaproth, in Germany, in 1789, analyzed a jargon from Ceylon and found a new earth, which Werner name zircon (silex circonius), and Klaproth called Zirkonertz ( zirconia). Although, it wasn't till		Isotopes Naturally occuring zircon contains five isotopes, althought fifteen other isotopes are known to exist. Zircon, ZrSiO4, is the principal ore, is pure ZrO2 in crystalline form having a halfnium content of about 1%. Zirconium also occurs in some 30 occurs in some 30 other recognized mineral species. Zirconium is produced commercially be reduction of chloride and magnesium and by other methods.
Hafnium & Zirconium Commercial grade zirconium contains from 1-3% Hafnium. It was finally identified in zircon from Norway, by means of X-ray spectroscope analsis. It was named in hornor of te city in which the discovery was made. Most zirconium minerals contain 1 to 5% hafnium. It was originally separated from zirconium by repeated recrystalization. To find out more about Halfnium go here: Halfnium Webpage	How much Zirconium is in you? 50 pounds= .001135g of Zr 60 pounds= .001362g of Zr 70 pounds= .001589g of Zr 80 pounds= .001816g of Zr 90 pounds= .002043g of Zr 100 pounds= .002270g of Zr 110 pounds= .002497g of Zr 120 pounds= .002724g of Zr 130 pounds= .002951g of Zr 140 pounds= .003178g of Zr 150 pounds= .003405g of Zr
Glossary Potassium: A silver-white soft light low-meting unicalent metallic element of the alkali metal group that occurs abundantly in nature especially ombined in minerals.- link to website Isotopes: Any of two or more species of atoms of a chemical element with the same number and nearly identical chemical behavior but with differing atomic mass or mass number and different phsical properties. Hafnium: Netallic element that resembles zirconium in its chemical properties and occurs in zirconium minerals and that readily absorbs neutrons. Magnesium: A silver-white light malleable ductile metallic element that occurs abundantly in nature an is used in metallurgical and chemical processes, in photography, signaling, and pyrotechnics because fo the intense white linght it produces on burning, and in construction especially in the form of light alloys.-li. Corrosive: Tending or having the power to corrode. Niobium: A lustrous light gray ductile metallic element that resembles tantalum chemically and is used in alloys.- link to website. Crucibles: A vessel of very refractory material (as porcelain) used for melting and calcining a substance that requires a high dgree of heat. Recrystallization: To crystallize again or repeatedly- crystallization- to cause to form crystals or assume crystalline form.
Bibliography Websites: Chemicool Periodic Table Environmental Chemistry Periodic Table Periodic Table Periodic Table of the Elements Periodic Table of Poetry Web Elements Periodic Table Book: Todd, Robert W. Physical Science A Wart Classroom Edcuation Company, Austin 650 pgs. Charts: Perodic Table of Elements Wall Chart - American Chemical Society A periodic Table of the Elements Wall Chart, Royal Society of Chemistry Images: http://www.stepshow.com/cardshop/images/diamond.gif http://www.animationfactory.com/animations/objects/gems/crystal_pendant_md_clr.gif http://animationfactory.com/animations/creatures/stars/star_tip_md_wht.gif http://www.devtra.com/images/sign5.jpg