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Cinnabar

Cinnabar is a bright scarlet or blood red to a brick red colored mineral with a submetallic luster.

Chemical Formula: HgS

Other names: Mercury sulfide

Layman's explanation: Cinnabar is the most abundant mercury mineral, occuring in veins formed at low temperatures near recent volcanic rocks or hot springs all over the world. Because it is the principal ore of mercury, many cinnabar mines exist in areas of abundance. Occasionally, native mercury is found alongside cinnabar as a heavy, tin-white liquid. The cinnabar crystals are translucent to transparent and scarlet to deep crimson in color. It is often identified in the field by its bright red color, softness, and unusual heaviness. Cinnabar has been known since antiquity; its name is derived from the Persian words for "dragon's blood."

Keywords: volcanic, penetration twin, Mineral

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