Excelent specimen showing single, large well terminated chalcopyrite crystal with shiny faces,internaly dissolved and replaced by pyrite – as result on the surfce could be sen cracks naturally stabilased by pyrite. Singeneticaly , next to chalcopyrite is developed group of lustrous sphalerite crystals.
Архиви: Lots
6 pieces of thin, transparent quartz
6 pieces of highly transparent quartz drouses with shiny crystal faces