Zirconium
Links
Visual Elements: Zirconium
http://www.chemsoc.org/viselements/pages/zirconium.html
Image, uses, physical information, and ionisation energies.
It's Elemental: Zirconium
http://education.jlab.org/itselemental/ele040.html
Basic physical and historical information.
ChemicalElements.com: Zirconium
http://www.chemicalelements.com/elements/zr.html
Basic information, atomic structure, and isotopes.
USGS Minerals Information: Zirconium
http://minerals.usgs.gov/minerals/pubs/commodity/zirconium/
Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Zirconium
http://www.scescape.net/~woods/elements/zirconium.html
Data tables and historic information.
EnvironmentalChemistry.com: Zirconium
http://environmentalchemistry.com/yogi/periodic/Zr.html
Atomic structure, chemical and physical properties, and table of nuclides.
WebElements: Zirconium
http://www.webelements.com/webelements/elements/text/Zr/key.html
Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Zirconium
http://www.wikipedia.org/wiki/Zirconium
Properties of the element, including its history, applications, and charateristics.
Lenntech: Zirconium
http://www.lenntech.com/Periodic-chart-elements/Zr-en.htm
Physical data, chemical properties, health and environmental effects.