Oxygen isotopes in differentiated meteorites

Iron meteorites commonly contain oxygen-bearing minerals, such as chromite, phosphates, and sometimes silicates. Oxygen isotopes in such inclusions provide information on 

Now that we have gained some appreciation of the value and limitations of the various kinds of samples available for cosmochemical analysis, we will begin to consider what these materials really tell us. In Chapter 4, we saw how solar system abundances of elements and isotopes are determined using the most primitive chondrites. In subsequent chapters, we will see how elements are fractionated in space, planetesimals, and planets. 

What is differentiation, and how does it cause chemical changes  

Distinguish between the origins of magmatic achondrites, primitive achondrites, and irons. 

How are oxygen isotopes in chondrites and achondrites illustrated graphically, and how are the isotopic compositions useful in classifying meteorites and recognizing relationships between them  

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