Figure 5-5. Two detrital grains of muscovite (red arrows) amidst calcite (C) with scattered pore space (P). A corresponding image shows the same field of view in plain-polarized light. Photomicrograph was taken in cross-polarized light; field of view is 0.8 mm wide. Drotsky's Cave, Botswana; Stalagmite DS87; thin section BDS1.5-2. Sample was collected by John Cooke and George Brook.
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