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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 .
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 ...
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.
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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).
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]
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.
Composition II 2 pm Institution UMass Boston Instructor Dan Messier Wikipedia Expert Ian (Wiki Ed) Subject English Course dates 2021-01-25 00:00:00 UTC – 2021-05-12 23:59:59 UTC Approximate number of student editors 16