Sentence Examples

  • Wollaston in the angles of the rhombohedra of the carbonates isomorphous with calc-spar, he observed that the angle in the case of calc-spar varied with the temperature.
  • His investigation (also in 1826) of the two crystalline modifications of sulphur threw much light on the fact that the two minerals calc-spar and aragonite have the same composition but different crystalline forms, a property which Mitscherlich called dimorphism.
  • Calc-schists are usually argillaceous limestones in which a large development of biotite or phlogopite has occasioned foliation.

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