Phosphate from Portugal.
Apatite (phosphate) with low birefringence appears black in the LPA image with chlorite (green) biotite (brown) and quartz (gray).
The difference between minerals is very clear on the Plane_Polarized view.
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Phosphate from Portugal.
Apatite (phosphate) with low birefringence appears black in the LPA image with chlorite (green) biotite (brown) and quartz (gray). The difference between minerals is very clear on the Plane_Polarized view.
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