Köttigite

Pink cobalt and nickel-bearing köttigite acicular crystals in a vein of sulphides – sphalerite, chalcopyrite, pyrite, and arsenopyrite. Width of view 6mm. Stack of 35 images. Click on the image below for a higher resolution...

Pink cobalt and nickel-bearing köttigite. Width of view 6mm. Stack of 60 images. Click on the image below for a higher resolution version.