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#mercury #toxic mineral #bright red #historical pigment

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#hofmannita #mineralogy #toxic mineral #heavy metals #arsenic poisoning #lead poisoning #thallium poisoning #crystal study

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#hofmannita #sulfosalt #toxic mineral #thallium #arsenic #lead #lengenbach #binntal

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#cinnabar #vermillion #mercury sulfide #red mineral #toxic mineral #historical pigment