From: Panasqueira Mine, PortugalSize: 5.8 x 6.6 x 5.6cmWeight: 168g (including base) Here's a really unique specimen from the Panasquiera Mine! There are two pyrite clusters perched aesthetically on a matrix of siderite and sphalerite. The pyrite clusters appear at first glance to be balls of pyrite, but upon closer inspection you can see that the pyrite crystals are actually cubic. Many little pyrite cubes cluster together to become spherical. What is hard to tell from the photos is just how shiny the pyrite is. It has a highly reflective surface, and pops out even though in the photo it blends into the siderite. This specimen comes with a labeled acrylic display base.