Pyrite twin “Iron Cross” – Gachalá, Cundinamarca, Colombia

 Rare pyrite floater crystal exhibiting the classic twinning pattern known as the "Iron Cross twin" (Iron Cross).
 The pyrite crystal has a thin, brilliant metallic luster of goethite on its surface and sharp, complex faces!
 The Pyrite Iron Cross twins from Colombia are exceptionally large and unique.
 "Iron cross twins" are twin crystals that have the shape of two pentagonal dodecahedra (also called pyritohedra). These twins have edges that intersect at a 90-degree angle, forming a cross.
 The iron cross twin pattern is well-known and has been shown in specimens from various locations, but complete crystals of good size are rare. This remarkable specimen comes from a 2018 find.
 Excellent Iron Cross twin.