Pyrite (Reflected Light)

Pyrite (FeS2) optical properties using a reflected-light polarizing microscope (adapted from Spry & Gedlinske, 1987):

System: Cubic

Reflectance: Strong

Colour: Yellowish white

VHN and polishing hardness: 1505 - 1620 / hard

Pleochroism: Nonpleochroic

Anisotropism: Usually isotropic, however it may be weakly anisotropic (blue-green to orange brown)

Internal reflections: Not present

Twinning: Not visible

Commonly associated minerals: Practically all minerals, but especially arsenopyrite, chalcopyrite, galena, magnetite, marcasite, pyrrhotite, sphalerite

Sample from the EOSC424 reflected light sample collection at UBC

Видео Pyrite (Reflected Light) канала Nichole Moerhuis