ES2 Metamorphic Rocks - Metamorphic Microstructures #10
The upper photograph shows a very strong preferred orientation of crossite needles, their c axes lying E-W and all showing their blue pleochroic colour. Confirmation that this is a linear fabric is given by a section of the rock cut normal to the lineation (lower photograph), in which most of the grains are basal sections cut normal to c and showing the lavender colour.

Field of view is 1 mm across.

Crossite schist, Saih Hatat, Oman. Sample MS-162.

photomicrograph 1
photomicrograph 2
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DJW - August 1997