metacinnabarite definition

  • noun:
    • sulphide of mercury in a black isometric kind
    • Sulphide of mercury in isometric form and black colored in shade.
    • Native mercuric sulphid, crystallizing in tetrahedral crystals, resembling those of the zinc sulphid sphalerite, also occurring massive of a black or grayish-black shade. It is found with all the red mercuric sulphid cinnabar in California.
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