PARAHOPEITE
Class : Phosphates, arsenates, vanadates
Subclass : Hydrated phosphates
Crystal system : Triclinic
Chemistry : Zn3(PO4)2 4H2O
Rarity : Rare to very rare
Parahopeite is a rare zinc phosphate that is found in secondary mineralization in the oxidation zone of zinc deposits. It accompanies pyromorphite and hemimorphite. Its name comes from the Greek para (near) and its dimorphic relationship with hopeite. Parahopeite forms tabular or prismatic crystals, white to pale yellow, sometimes golden brown, frequently grouped in parallel or radiate aggregates.
Main photo : Parahopeite from Kabwe Mine, Zambia © Rob Lavinsky
Parahopeite in the World
Twinning
Twins are common on {100}.
Fakes and treatments
No fakes listed for this mineral species.
Hardness : 3.5
Density : 3.31
Fracture : Undetermined
Streak : White
TP : Translucent to transparent
RI : 1.614 to 1.637
Birefringence : 0.023
Optical character : Biaxial +
Pleochroism : None
Fluorescence : None
Solubility : -
Magnetism : NoneRadioactivity : None