“The microstructure of hedleyite mineralization from Hedley, type locality. Cross section through a fragment of strongly fractured, high-grade bismuth-tellurium-gold ore, illustrating fine-grained, granular, partially deformed aggregates of hedleyite crystals (Hdl – bright greyish white pleochroism, the black lines trace the perfect cleavage on {0001}) in association with native bismuth (Bi – spotty crème) and native gold (Au – bright yellow). These minerals cementing a strongly fractured, porous matrix of quartz and calcite gangue (dark grey to black). The quartz gangue subordinately contains a plethora of microscopically inclusions of native bismuth (Bi – crème). The native bismuth grains are generally encrusted by colloform aggregates of bismite (Bis - light grey). Vertically reflected plane polarized light digital image in air. Please compare https://www.mindat.org/photo-1663719.html and the corresponding photomicrographs. G. Grundmann collection and photo, homemade polished section. ”

“The microstructure of hedleyite mineralization from Hedley, type locality. Cross section through a fragment of strongly fractured, high-grade bismuth-tellurium-gold ore, illustrating fine-grained, granular, partially deformed aggregates of hedleyite crystals (grey to dark grey anisotropy, between almost crossed polarizers brown to blue anisotropy can be observed) in association with native bismuth (weak anisotropy with twin lamellae) and native gold (isotropic). These minerals cementing a strongly fractured, porous matrix of quartz and calcite gangue (various dispersed light internal reflections). The quartz gangue subordinately contains a plethora of microscopically inclusions of native bismuth (weak anisotropy). The native bismuth grains are generally encrusted by colloform aggregates of bismite (yellow to brown dispersed light internal reflections). Vertically reflected plane polarized light digital image in air, with crossed polarizers. Please compare https://www.mindat.org/photo-1663719.html and the corresponding photomicrographs. G. Grundmann collection and photo, homemade polished section. ”