Chalcopyrite (Reflected Light)

Chalcopyrite (CuFeS2) optical properties using a reflected-light polarizing microscope (adapted from Spry & Gedlinske, 1987):

System: Tetragonal

Reflectance: Strong

Colour: Yellow to brassy yellow

VHN and polishing hardness: 181 - 203 / medium

Pleochroism: Weak, occasionally observable

Anisotropism: Weak but distinct, grey-blue to greenish yellow

Internal reflections: Not present

Twinning: Common parallel (100), (110), and (111); fine or broad lamellae

Commonly associated minerals: Arsenopyrite, covellite, cubanite, enargite, famatinite, galena, mackinawite, pyrite, pyrrhotite, sphalerite, stannite, valleriite

Sample from the EOSC424 reflected light sample collection at UBC

Видео Chalcopyrite (Reflected Light) канала Nichole Moerhuis