Mineral - Paradamite
Paradamite
Chemical Properties
Mineral Class
Arsenates
Toxicity
low
Formula
Zn₂(AsO₄)(OH)
Unit Cell
a=5,64 b=5,83 c=6,70 α=103° β=104° γ=88° Z=2
Physical Properties
Hardness
3.5
Streak
white
Density
Cleavage
Perfekt auf (010)
Fracture
Tenacity
Brittle
Optical Properties
Color
whiteyellowyellow white
Birefringence
0,054
Luster
Vitreous,
Resinous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
triclinic
Point Group
Space Group
Habit
leafy, dipyramidal, prismatic, Rhombohedron, tardy, spear-shaped, tabular
Formation
Oxidationszone von polymetallischen Lagerstätten
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Paradamite
Composition
Elements
Mass
As₂O₅
40,17
Fe₂O₃
0,12
FeO
0,45
ZnO
56,22
H₂O
3,44
Mexiko
Groups and Members
Tarbuttit-Gruppe
Found in 1956 in the Ojuela Mine in Mexico and named after the French mineralogist Gilbert Joseph Adam.
Dimorphic to orthorhombicadamine .
Famous sites
Mexico
(TL) Ojuela Mine/ Municipio Mapimí/ Durango/ Mexico
Namibia
Tsumeb Mine/ Tsumeb/ Oshikoto/ Namibia