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Minerals - Silver | TerraCollect
Mineral - Silver
Silver
Ag
Chemical Properties
Mineral Class
Elements
Toxicity
none
Formula
Ag
Unit Cell
a=4.09 Z=4
Physical Properties
Hardness
2.5 - 3
Streak
white
silver
Density
Very Heavy (>6)
Optical Properties
Color
gray
silver
Birefringence
Luster
Metallic
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Composition
Elements
Mass
Ag
98.45
Au
0.004
Cu
0.011
Fe
0.024
Hg
1.130
Sb
.0581
Norway (Palache et al. 1952)
Groups and Members
Copper-Group
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Fracture
Tenacity
Elastic-flexible
hexoctahedral - 4/m
3
2/m
Space Group
Fm
3
m (225)
Habit
dendritic,
fibrous,
granular,
curly,
massive,
acicular
Formation
(1) Primarily through precipitation from hydrothermal solutions in mostly epithermal veins (2) Secondarily in the cementation zone through the reduction of dissolved silver ions (Ag+) from the oxidation zone of sulfide deposits
Paragenesis
Twinning
Contact twins after {111} - Spinel law
Rarity
Rather rare
Synonyms
Silver
