Galena (Reflected Light)

Galena (PbS) optical properties using a reflected-light polarizing microscope (adapted from Spry & Gedlinske, 1987):
System: Cubic
Reflectance: Strong
Colour: White to light grey
VHN and polishing hardness: 59 - 65 / soft
Pleochroism: Nonpleochroic
Anisotropism: Isotropic
Internal reflections: Not present
Twinning: Not present
Commonly associated minerals: Acanthite-argentite, arsenopyrite, bournonite, chalcopyrite, cubanite, magnetite, marcasite, prousite, pyrargyrite, pyrite, pyrrhotite, sphalerite, tetrahedrite-tennantite
Sample from the EOSC424 reflected light sample collection at UBC