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An introduction to minerals and rocks under the microscope

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Figure 5 Some examples of crystal shapes: (a) prismatic (quartz) (6 cm long); (b) tabular (mica) (9 cm across); (c) tabular (barite) (field of view 10 cm across); (d) equidimensional (garnet) (4 cm); (e) equidimensional (pyrite) (2 cm).

 1.3.1 Crystal shape