• Calcite - Wikipedia

    Calcite; General; Category: Carbonate ... translucent variety of fine-grained banded deposit of calcite. ... A transparent variety called Iceland spar is used for ...

  • Calcite - Wikipedia

    Calcite; General; Category: Carbonate ... grained banded deposit of calcite. ... form is sometimes referred to as "nailhead spar". Single calcite crystals display an ...