Mineral - Yavapaiite
Yavapaiite
Chemical Properties
Mineral Class
Sulphates
Toxicity
none
Formula
KFe(SO₄)₂
Unit Cell
a=8,15 b=5,15 c=7,88 β=95° Z=2
Physical Properties
Hardness
2.5 - 3
Streak
whiteyellowyellow white
Density
Normal (2-3,5)
Cleavage
Perfekt auf (001), (100) und deutlich auf (110)
Fracture
conchoidal,
uneven
Tenacity
Brittle
Optical Properties
Color
pinkvioletcolorless
Birefringence
0,105
Luster
Vitreous,
Adamantine
Transparency
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
coarse, crusty, massive, tabular
Formation
Fumarolen, in SHMS-Lagerstätten
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Yavapaiite
Composition
Elements
Mass
SO₃
55,84
Al₂O₃
0,11
Fe₂O₃
27,82
FeO
0,07
MgO
0,08
Na₂O
0,62
K₂O
15,46
Arizona
Groups and Members
Yavapaiit-Gruppe