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Minerals - Dufrénite | TerraCollect
Mineral - Dufrénite
Dufrénite
Ca₀,5Fe²⁺Fe³⁺₅(PO₄)₄(OH)₆ · 2H₂O
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
Ca₀,5Fe²⁺Fe³⁺₅(PO₄)₄(OH)₆ · 2H₂O
Unit Cell
Physical Properties
Hardness
3.5 - 4.5
Streak
gray
green
green grey
Optical Properties
Color
black
brown
green
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Point Group
Space Group
Habit
spherical,
radial,
grape-shaped
Formation
Oxidationszone von Eisen-Lagerstätten, Metasomatose
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Dufrénite
