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An introduction to minerals and rocks under the microscope

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Figure 45 (a) A pyroxene in stubby prismatic form. (b) Plane-polarised light image of a clinopyroxene in a gabbro. Pyroxenes sometimes have a faint pleochroism. A single set of cleavage traces can be seen. (c) The same field of view as in (b) between crossed polars, showing pyroxene with second-order interference colours.

 3.4.1 Pyroxene