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Saturday, June 18, 2022
Thursday, June 9, 2022
Calcite, Marcasite France Stone Co. Quarry Logansport Cass Co. Indiana USA (2006) FOV:4.8 mm
#2766 Calcite, Marcasite France Stone Co. Quarry Logansport Cass Co. Indiana USA (2006) FOV:4.8 mm - Calcite showing double refraction of marcasite blades (not artifacts of focus stacking).
Monday, June 6, 2022
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