Realgar mineral

Realgar mineral

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Credit: DIRK WIERSMA/SCIENCE PHOTO LIBRARY

Caption: Realgar mineral. Realgar is an orange-red, arsenic sulphide mineral, from which a large proportion of the world's arsenic is derived. Realgar is highly poisonous and has been used throughout history as both a pigment and a medicine. In China realgar was used to make household ornaments, and charms to ward off disease. Realgar was also used to create the colour white in fireworks and is still used in combination with potassium chlorate to make 'red explosive'. Other traditional uses include printing and dyeing calico, and tanning hides.

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Keywords: arsenic, arsenic sulphide, charm, charms, chemical, chemistry, chinese ornaments, dye, dyeing, earth science, fireworks, geological, geology, hides, historical, history, medical, medicine, mineral, mineralogy, orange, ore, pigment, pigments, poison, poisonous, print, printing, realgar, red explosive, sulphide, tanning, traditional medicine

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