Cinnabar

HgS

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Cinnabar, the principal ore of mercury, is a mercury sulfide (HgS) and one of the densest non-metallic minerals, with a specific gravity between 8.10 and 8.20. It crystallizes in the trigonal system, forming rhombohedral, massive, or encrusting habits, and typically develops near volcanic hot springs and fumaroles. The mineral has an adamantine luster, a scarlet streak, perfect prismatic cleavage, and a low Mohs hardness of 2 to 2.5. Its striking scarlet color made cinnabar a prized pigment, known as vermilion, from antiquity onward, though its mercury content renders the raw material toxic to handle. Its high density and perfect prismatic cleavage aid identification where the scarlet color alone would be ambiguous.

Cinnabar es la principal mena de mercurio y uno de los minerales no metálicos más densos. Su llamativo color escarlata lo ha convertido en un pigmento apreciado (bermellón) desde la antigüedad. Se forma típicamente cerca de fuentes termales volcánicas y fumarolas.

Sistema Cristalino Trigonal
Clase Mineral 02 Sulfides and Sulfosalts
Dureza Mohs 2.0-2.5
Gravedad Específica 8.10-8.20
Color Scarlet red, brownish-red
Brillo Adamantine
Raya Scarlet
Exfoliación Perfect prismatic {1010}
Fractura Conchoidal to uneven
Transparencia Translucent
Hábito Cristalino Rhombohedral, massive, encrusting

Dureza Mohs

Mohs Hardness: 2,0 – 2,5
1 Soft10 Hard
Cinnabar has a Mohs hardness of 2–2.5 on the 1–10 mineral hardness scale.
Dureza Mohs Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Sistema Cristalino

Trigonal
Cinnabar crystallizes in the Trigonal crystal system.
Propiedad Value
Sistema Cristalino Trigonal (Rhombohedral)
Axial Relationships a = b = c, α = β = γ ≠ 90°

Frequently Asked Questions

What is the hardness of Cinnabar?
Cinnabar has a Mohs hardness of 2.0-2.5.
What crystal system does Cinnabar belong to?
Cinnabar crystallizes in the Trigonal crystal system.
What color is Cinnabar?
Cinnabar is typically Scarlet red, brownish-red.
What type of luster does Cinnabar have?
Cinnabar exhibits a Adamantine luster.
What is the chemical formula of Cinnabar?
The chemical formula of Cinnabar is HgS.