Calcite and wulfenite on iron oxide matrix Chalcopyrite Pink chalcedony often grows shapes

Pink chalcedony often grows shapes like a nest

Spherulites are typically crystalized feldspar forming within volcanic igneous quartz-based rock

with an especially three-dimensional splash-like formation

radiating out from a central point

75 x 2 x 1

Calcite and wulfenite on iron oxide matrix Chalcopyrite Pink chalcedony often grows shapesLocale: Glove Mine, Santa Cruz County, Arizona Approx size: 5 x 4 x 2. 5" Approx weight: 672g (almost 1 1 2 lb) ** Brittle warning! This material is brittle and may shed pieces, use caution when handling. ** Staining warning! The soft oxidized matrix will leave dark dusty staining on surfaces and your skin. This specimen from the Glove Mine in southern Arizona looks messy and chaotic at first glance, but it is an excellent piece for studying the