Galena, chalcopyrite, tetrahedrite and covelline. Clevedon, Somerset, Britain




Click here



360µm


Galena (white, bottom left) is rimmed by chalcopyrite (yellow) and also encloses it (top right). Tetrahedrite (light grey, centre) is intergrown with chalcopyrite which is partially replaced by covelline (deep blue, top left, bottom right). Baryte (dark grey) is the gangue.


Polished thin section, plane polarized light, x 55, air



Click here for Associations Click here for Mineralogy Click here for high-res image (~300K)