Acanthite-Argentite (Reflected Light)

Acanthite-Argentite (Ag2S) optical properties using a reflected-light polarizing microscope (adapted from Spry & Gedlinske, 1987):

System: Monoclinic

Reflectance: Medium

Colour: Light grey, often with a greenish tinge

VHN and polishing hardness: 23 - 26 / soft

Pleochroism: Weak to nonpleochroic

Anisotropism: Moderate, shades of grey

Internal reflections: Not present

Twinning: (001) broad lamellae

Commonly associated minerals: Ag minerals, galena, silver

Sample from the EOSC424 reflected light sample collection at UBC

Видео Acanthite-Argentite (Reflected Light) канала Nichole Moerhuis