Marcasite & Calcite Specimen - Buffalo, Iowa #4 Popular Crystals_Pyrite It’s green colouring comes from

It’s green colouring comes from it’s strong copper content - always wash your hands after handling

It often has a slightly metallic appearance

You will receive the exact Baryte crystal seen in the photographs

Many internet articles hype Stibnite as being one of the most dangerous minerals on the planet due to it's high antimony content

Marcasite & Calcite Specimen - Buffalo, Iowa #4 Popular Crystals_Pyrite It’s green colouring comes fromThis beautiful specimen is from the Linwood Mine in Buffalo, Iowa, USA and has icy clear Calcite crystals with inclusions of Marcasite. You will receive the exact crystal pictured. Weight: 113g Size: 64mm x 44mm Calcite is found all over the world in a variety of forms and colours, often in combination with other minerals. The more common forms of Calcite are Orange, Blue, Green and Yellow, Iceland Spar is a clear double refractive variety that forms