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Greenockit calcite sphalerite crystals

  • 1991_Geology_60.jpg
Short desc: Greenockit calcite sphalerite crystals


Things in this design:
mineral Greenockit calcite sphalerite crystals

This design is used by one stamp:
Hungary 9/1/1969 60f issue=State Geological Institute 100th dt=Fossils & minerals (1969) perf=11.5x12






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