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Mineralpedia Details for Metacinnabar

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Metacinnabar

Metacinnabar

Named for its general association with cinnabar, and the prefix meta- in this instance refers to the Greek translation which means “with.” Metacinnabar is found in mercury deposits that formed under low-temperature and near-surface conditions. Localities for Metacinnabar include in the United States, Canada, Slovenia, Italy, Spain, Russia, and China, among others.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/metacinnabar.pdf

Formula
HgS 
Crystal System
Isometric 
Crystal Habit
Granular, Encrustations 
Cleavage
None, None, None 
Luster
Metallic 
Color
black, gray black 
Streak
black 
Class
Isometric - Hextetrahedral 
Fracture
Uneven 
Hardness
WebMineral
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Mindat
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Metacinnabar from Mount Diablo mine, Contra Costa Co., California, United States

Metacinnabar
            from Mount Diablo mine, Contra Costa Co., California, United States

Blackish or deep red micro crystals to 0.75mm

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