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  2. Cinnabar - Wikipedia

    en.wikipedia.org/wiki/Cinnabar

    Cinnabar has a mean refractive index near 3.2, a hardness between 2.0 and 2.5, and a specific gravity of approximately 8.1. The color and properties derive from a structure that is a hexagonal crystalline lattice belonging to the trigonal crystal system , crystals that sometimes exhibit twinning .

  3. Mercury sulfide - Wikipedia

    en.wikipedia.org/wiki/Mercury_sulfide

    red cinnabar (α-HgS, trigonal, hP6, P3221) is the form in which mercury is most commonly found in nature. Cinnabar has rhombohedral crystal system. Crystals of red are optically active. This is caused by the Hg-S helices in the structure. [5] black metacinnabar (β-HgS) is less common in nature and adopts the zinc blende crystal structure (T 2 ...

  4. Wakasugiyama Site - Wikipedia

    en.wikipedia.org/wiki/Wakasugiyama_Site

    The Wakasugiyama Cinnabar Mine (若杉山辰砂採掘遺跡, Wakasugiyama shinshasaikutsu iseki) is an archaeological site with the traces of a late Yayoi to early Kofun period cinnabar production site, located in the Suii neighborhood of the city of Anan, Tokushima on the island of Shikoku in Japan.

  5. Alchemical symbol - Wikipedia

    en.wikipedia.org/wiki/Alchemical_symbol

    Alchemical symbols were used to denote chemical elements and compounds, as well as alchemical apparatus and processes, until the 18th century. Although notation was partly standardized, style and symbol varied between alchemists.

  6. Vermilion - Wikipedia

    en.wikipedia.org/wiki/Vermilion

    Vermilion (sometimes vermillion) [1] is a color family and pigment most often used between antiquity and the 19th century from the powdered mineral cinnabar (a form of mercury sulfide). It is synonymous with red orange , which often takes a modern form, but is 11% brighter (at full brightness).

  7. Pycnoporus cinnabarinus - Wikipedia

    en.wikipedia.org/wiki/Pycnoporus_cinnabarinus

    Pycnoporus cinnabarinus, also known as the cinnabar polypore, is a saprophytic, white-rot decomposer. Its fruit body is a bright orange shelf fungus. It is common in many areas and is widely distributed throughout the world. It is inedible. [2] It produces cinnabarinic acid to protect itself from bacteria. [3]

  8. Chinese alchemy - Wikipedia

    en.wikipedia.org/wiki/Chinese_alchemy

    Crystals of cinnabar, crystals of barite, crystals of quartz, crystals of calcite : Wanshan Mine, Wanshan District, Tongren Prefecture, Guizhou Province, China, an example of material historically associated with Chinese alchemy. Chinese alchemy (煉丹術 liàndānshù "method for refining cinnabar") is a historical Chinese approach to alchemy.

  9. Cinnabar (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Cinnabar_(disambiguation)

    Cinnabar is the common bright scarlet to brick-red form of mercury(II) sulfide. Cinnabar may also refer to: Cinnabar, the color of the mineral; Cinnabar, Queensland, a locality in the Gympie Region, Queensland, Australia; Cinnabar moth (Tyria jacobaeae), a brightly coloured arctiid moth; Cinnabar Theater, a theater in Petaluma, California, USA