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Minerals - Cinnabar | TerraCollect
Mineral - Cinnabar
Cinnabar
HgS
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
middle
Formula
HgS
Unit Cell
a=4.15 c=9.50 Z=3
Physical Properties
Hardness
2 - 2.5
Streak
red
Density
Very Heavy (>6)
Optical Properties
Color
red
Birefringence
0.351
Luster
Metallic,
Adamantine
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
trigonal
Point Group
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Perfect after {10
1
0}
Fracture
uneven
Tenacity
Supple
trigonal-trapezohedral - 32
Space Group
P3
1
21 (152)
Habit
crusty,
massive,
Rhombohedron,
tabular
Formation
In hydrothermal ore deposits
Paragenesis
Twinning
Penetration twins after {0001}
Rarity
Rather rare
Synonyms
Cinnabar,
Cinnabarite,
Zinnober
