Mineral - Botryogen
Botryogen
Chemical Properties
Mineral Class
Sulphates
Toxicity
none
Formula
MgFe³⁺(SO₄)₂(OH) · 7H₂O
Unit Cell
Physical Properties
Hardness
2 - 2.5
Streak
yellow
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
redorange
Birefringence
0.055
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
P2 1 /c (14)
Habit
prismatic
Formation
Due to the oxidation of Pyrite under dry climatic conditions
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Botryogen