Marble thin section.
Marble from Franchimont quarry Belgium. Thin section LPA + wave plate. All pink crystal sections have main optical directions parallel to polarizer. Blue or yellow crystals are low birefringence impurities in the carbonate.
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Marble thin section.
Marble from Franchimont quarry Belgium. Thin section LPA + wave plate. All pink crystal sections have main optical directions parallel to polarizer. Blue or yellow crystals are low birefringence impurities in the carbonate.
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