Osarizawaite

Osarizawaite
Osarizawaite

Osarizawaite from Arizona
General
Category Sulfate minerals
Chemical formula PbCuAl2(SO4)2(OH)6
Strunz classification 07.BC.10
Crystal symmetry 3m (3 2/m) - Hexagonal Scalenohedral
Unit cell a = 7.05Å, c = 17.24(1)Å
Identification
Color Greenish yellow
Crystal system Trigonal
Tenacity Brittle
Mohs scale hardness 3 - 4
Specific gravity 3.89 - 4.037
Optical properties Uniaxial (+)
Refractive index nω = 1.712() nε = 1.732(2)
Birefringence δ = 0.020
Pleochroism Visible
References [1][2][3]

Osarizawaite is a greenish yellow mineral with the chemical formula PbCuAl2(SO4)2(OH)6. It has rhombohedral crystals.[4]

References

  1. ^ Mindat.org
  2. ^ Webmineral.com
  3. ^ Handbook of Mineralogy
  4. ^ Fleischer, Michael & Mandarino, Joseph, "Glossary of Mineral Species", The Mineralogical Record, 1991