Sample of schiefer spar, a variety of calcite occurring in very thin plates or scales. Dated 21st Century

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archival, archive, calcite, century, historical, history, sample, sampleschiefer, schiefer, spar, sparcalciteplateplatesscalescaleswhitenaturalnaturegeology21st