Mineral - Nissonite
Nissonite
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
Cu₂Mg₂(PO₄)₂(OH)₂ · 5H₂O
Unit Cell
a=22,52 b=5,02 c=10,51 β=100° Z=4
Physical Properties
Hardness
2.5
Streak
whitegreengreen white
Density
Normal (2-3,5)
Cleavage
Unvollkommen auf (100)
Fracture
Tenacity
Optical Properties
Color
greenblueturquoise
Birefringence
0,037
Luster
Vitreous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
leafy, Rhombohedron, Scalenohedron, spear-shaped, tabular
Formation
Oxidationszone von Kupfer-Lagerstätten
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Nissonite
Composition
Elements
Mass
P₂O₅
27,10
V₂O₅
0,20
FeO
0,04
CuO
32,20
MgO
15,80
H₂O
22,32
Kalifornien