Environmental Chemistry
Environmental chemistry.com: Periodic Table Iridium
Chances are, if you need to know anything about iridium, this site will have it. Exceptionally thorough.
Florida-Spectrum Environmental Services
Florida Spectrum: Chemical Fact Sheet: Iridium
A summary of the basic properties and uses of iridium, as well as a few random facts about it.
Other
Web ref.org: Iridium
A student friendly site with basic information (and links to definitions or examples of key terms) on iridium. Good job on uses.
Georgia Department of Education
Ga Virtual Learning: Earth and Life History
In this amazingly comprehensive tutorial you will learn about the geological and environmental changes that occurred during the geologic time scale.
Web Elements
Web Elements Periodic Table: Iridium
WebElements offers valuable information on iridium, with basic data, chemical and physical properties, electron arrangement and more. A helpful site.
Virginia Tech
Virginia Polytechnic Institute: Greenhouse Dinosaur Extinction Theory
This comprehensive page discusses the Asteroid Impact vs. Volcano-Greenhouse dinosaur extinction debate. It was written by paleontologist, professor, and scientist Dr. Dewey McLean.
Lawrence Berkeley National Laboratory
Berkeley Lab: The Fruitful & Inventive Mind of Scientist Luis Alvarez
This article, reprinted from the fall 1979 LBL News Magazine, was written about Dr. Luis Alvarez and his part in the study of geological sediments and the great extinctions.
University of Kentucky
Uk: Iridium Comics
A 1968 Metal Men comic strip featuring iridium. Not the greatest source of imformation but good for illustrations and fun.
Other
Web Mineral/iridium
Very good basic chemical and physical data summary of iridium, as well as a listing (with links to more info and photos) of minerals containing the metal iridium.
Chemicool
Chemicool: Iridium
This site from Chemicool and David D. Hsu is a well organized set of tables summarazing all sorts of helpful information on iridium. A good place to find data on physical properties.
Khan Academy
Khan Academy: Quiz: How Do Earth and Life Interact
Quiz yourself over the interaction between earth and life.
Khan Academy
Khan Academy: Infographic: Chemical Abundances: A Meteorite
Examine the chemical composition of a meteorite, identify elements and their abundances in meteorites, and take an in-depth look at iridium with this downloadable infographic.
Royal Society of Chemistry
Chemical Society: Iridium
A short summary of iridium's properties and main uses.
Curated OER
[Bohr Model of Iridium]
Helpful site with basic data as well as information on the history, uses, sources and properties of iridium.