Mineral - Kernowite
Kernowite
Chemical Properties
Mineral Class
Arsenates
Toxicity
low
Formula
Cu₂Fe(AsO₄)(OH)₄ · 4H₂O
Unit Cell
a=12,92 b=7,54 c=10,03 β=91° Z=4
Physical Properties
Hardness
2 - 2.5
Streak
greenblueblue green
Density
Normal (2-3,5)
Cleavage
Auf (110), (011), undeutlich
Fracture
conchoidal,
uneven
Tenacity
Optical Properties
Color
green
Birefringence
Luster
Vitreous,
Greasy
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
leafy, Octahedron, spear-shaped, tabular
Formation
Oxidationszone von Kupfer-Lagerstätten
Paragenesis
Twinning
Rarity
Rare
Synonyms
Kernowite
Composition
Elements
Mass
P₂O₅
3,73
As₂O₅
23,05
Al₂O₃
0,98
Fe₂O₃
10,85
CuO
36,38
H₂O
25,01
England