Green crystals of Calcite have formed in a geode. Sometimes called Optical Spar the crystals exhibit double refraction, meaning that light is split

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Green crystals of Calcite have formed in a geode. Sometimes called Optical Spar the crystals exhibit double refraction, meaning that light entering is split into two components giving a double image

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Size: 6000px × 4124px
Location: Anglesey, UK
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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