Birefringence

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ドラゴンナイトcaptainriddler萩原みのりmario macilauproject eden

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LIVE

Viking CompassVikings were known for their prowess in sailing and navigating large stretches of open

mineralsandsomerocks:Olivine in Plane Polarized (left) and Cross Polarized (right) LightThe amount o

fuckyeahmineralogy: A naturally rhombic specimen of calcite (CaCO3). Well-formed calcite like this i

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