Virtual rock microscope

A nice one that I came by.  On this one you  can look at different rock samples and see the the minerals making them up.

 

http://students.open.ac.uk/science/s276/VM/program/openlearn/index.html

 

A prewritten lab to go with it http://www.open.edu/openlearn/science-maths-technology/science/introduction-minerals-and-rocks-under-the-microscope/content-section-1.1#

This one would be good for high school or different parts off it would be good at different levels.