Cubic Pyrite Crystals in Limestone Matrix Ampliación a Victoria Mine, Navajún, La Rioja, Spain


The pyrite crystals are cubic in shape, with well-defined faces and edges, and are a bright, brassy yellow color. They are found embedded in a matrix of limestone, which gives the specimen a contrasting white and gray appearance. The Ampliación a Victoria Mine is renowned for producing high-quality pyrite crystals, which are highly sought after by collectors and mineral enthusiasts. The crystals are formed through a process of crystallization, where the pyrite minerals slowly grow and take on their characteristic cubic shape. This process can take millions of years, and the resulting crystals are often highly prized for their beauty and rarity.


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Photo credit: © Phil Degginger / Alamy / Afripics
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