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Locality: Teutoburg Forest, Germany
Size: 3 cm x 2 cm x 1.5 cm
Description: Marcasite is the orthorhombic polymorph (the same chemical formula, but different crystal system) of isometric (cubic) Pyrite.
This is a beautiful specimen of pale brass-yellow Marcasite crystals exposed in a limestone matrix. The Marcasite crystals are arranged in a “residential neighborhood” pattern running through the limestone.
Concept & 3D-modelling by dr. Andrei Ionut APOPEI