Mineral - Bindheimite
Bindheimite
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
middle
Formula
Pb₂Sb₂O₆O
Unit Cell
a=10.42 Z=8
Physical Properties
Hardness
4 - 4.5
Streak
whiteyellowyellow white
Density
Heavy (3,5-6)
Cleavage
Fracture
conchoidal
Tenacity
Brittle
Optical Properties
Color
whitebrownyellow
Birefringence
Luster
Silky,
Resinous
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
hexoctahedral - 4/m 3 2/m
Space Group
Fd 3 m (227)
Habit
massive, columnar, grape-shaped
Formation
Oxidation zone of lead-antimony deposits
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Bindheimite
Composition
Elements
Mass
Sb₂O₅
40.35
Fe₂O₃
5.22
PbO
44.12
H₂O
5.31
Nevada (Palache et al. 1952)