How To Use Iceland spar In A Sentence

• Iceland spar is used chiefly in the optical instrument known as the polariscope. Wealth of the World's Waste Places and Oceania
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• Sharp, clear magnesite rhombohedra may be mistaken for ‘Iceland spar’ calcite, but the density is a quick tip-off to the mineral's true identity.
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• Again, it is assumed that readers know aquamarine is beryl, amethyst is quartz, and Iceland spar is calcite but cannot grapple with the complexity of remembering that spessartine and grossular are garnets.
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• Certain crystals will split incoming light into two separate rays; Iceland spar is one such crystal, as are calcite and quartz.
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• Again, it is assumed that readers know aquamarine is beryl, amethyst is quartz, and Iceland spar is calcite but cannot grapple with the complexity of remembering that spessartine and grossular are garnets.
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