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Minerals - Ferberite | TerraCollect
Mineral - Ferberite
Ferberite
FeWOâ‚„
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Chemical Properties
Mineral Class
Tungstate
Toxicity
none
Formula
FeWOâ‚„
Unit Cell
a=4.72 b=5.70 c=4.96 β=90° Z=2
Physical Properties
Hardness
5 - 5.5
Streak
black
brown
brown black
Optical Properties
Color
black
Birefringence
Luster
Metallic
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Composition
Elements
Mass
WO₃
75.21
FeO
24.37
MnO
0.19
Japan (Palache et al. 1952)
Groups and Members
Columbite-Supergroup
Wolframite-Group
Karten-Ebenen
Geologische Karte
Satelliten Karte
Density
Very Heavy (>6)
Cleavage
Perfect after {010}
Fracture
conchoidal
Tenacity
Brittle
monoclinic-prismatic - 2/m
Space Group
P2/c (13)
Habit
prismatic,
tabular
Formation
In the pneumatolytic to hydrothermal magmatic stage, through the impregnation of acidic solutions, forming Greisen and ore veins.
Paragenesis
Twinning
V-shaped contact twins after {100}
Rarity
Rather rare
Synonyms
Ferberite
