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  3. Cinnabar

Polished stones - full range in stock "Cinnabar"

Cinnabar is the most common mercury mineral. It has a scarlet color. It is an important ore of mercury. In ancient times it was used for the production of red paint. Crystals are characterized by the formation of germination twins. But as a rule, cinnabar is found in the form of continuous masses. Large crystals are rare. Can be melted at only 200 degrees.

You can see cinnabar stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Cinnabar

General
Category Sulfide mineral
Formula
(repeating unit)		 Mercury(II) sulfide, HgS
IMA symbol Cin
Strunz classification 2.CD.15a
Crystal system Trigonal
Crystal class Trapezohedral (32) (same H–M symbol)
Space group P3121, P3221
Unit cell a = 4.145(2) Å, c = 9.496(2) Å, Z = 3
Identification
Color Cochineal-red, towards brownish red and lead-gray
Crystal habit Rhombohedral to tabular; granular to massive and as incrustations
Twinning Simple contact twins, twin plane {0001}
Cleavage Prismatic {1010}, perfect
Fracture Uneven to subconchoidal
Tenacity Slightly sectile
Mohs scale hardness 2.0–2.5
Luster Adamantine to dull
Streak Scarlet
Diaphaneity Transparent in thin pieces
Specific gravity 8.176
Optical properties Uniaxial (+)
Refractive index nω = 2.905 nε = 3.256
Birefringence δ = 0.351
Solubility 1.04×10−25 g/100 ml water
(Ksp at 25 °C = 2×10−32)
Cinnabar
Code: 3019
Cinnabar
Chagan-Uzun, Altai, RF
68*48*27mm

0.00 $ $65.00

Cinnabar archived
Code: 3020
Cinnabar
Chagan-Uzun, Altai, RF
62*55*25mm

0.00 $ $50.00

Cinnabar archived
Code: 2213
Cinnabar
Chagan-Uzun, Altai, RF
70*45*24mm

0.00 $ $65.00

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