Miharaite

Formula Cu4FePbBiS6

From Alfredo Petrov:

MIHARAITE (mihara-koh)

  • Okayama: The type locality of miharaite, a rare Cu-Fe-Pb-Bi sulphide, is the Honpi deposit at the Mihara mine, where it forms microscopic intergrowths with chalcopyrite and galena, occasionally also wittichenite (from which it is indistinguishable by ore microscopy), as grains to a few hundredths of a mm across as inclusions in bornite grains in a bornite-rich skarn. Only visible in polished section, where it displays a pale grey to greyish white colour. Also found at the Imooka mine.

Below: Miharaite, Mihara mine, Higashi-Mihara, Ibara City, Okayama Prefecture, Japan. Width of view 7mm.

Stacked from 60 images. Method=B (R=8,S=4)