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Results 1 - 2 of 2 for Calamine
  • Article - 23 Jul 2001
    Metallic zinc was produced in India by reducing calamine with organic substances like wool, in the 13th century A.D. Marggraf rediscovered zinc in 1746 and showed that metallic zinc could also be...
  • Article - 20 Jul 2001
    In 1817, German chemist Friedrich Strohmeyer discovered cadmium from an impurity of zinc carbonate (ZnCO3). Cadmium derives from the Latin term ‘cadmia’ and the Greek word ‘kadmeia’, which are ancient...