1. Why do we classify meteorites?
2. According to the authors, what three things are most useful for classification and are almost always required for defining a new group?
3. What is the fundamental distinction between chondrites and other meteorite types?
4. Define "class", "clan", "group", "grouplet" and "subgroup" as used by the authors, giving examples.
5. What is the difference between "primary" and "secondary/tertiary" properties?
6. What petrographic type and subtype of chondrites is optimal for studying primary processes? Why?
7. Why is chemical data in Fig. 3 shown normalized to CI chondrites?
8. Create a table with meteorite types in a row header, sumarizing the petrography, chemical composition, and O-isotope composition of the following: C-chondrite class, O-chondrite class, E-chondrite class, R-chondrite group.
9. Create a table with meteorite types in a row header, summarizing the predominate mineralogy and/or rock types for the following: ureilite, acapulcoite-lodranite clan, angrite, aubrite, mesodiderite, and pallasite. Which of these are considered "primitive" by the authors and why?
10. What is most useful for classifying irons?