Pyrite, iron sulfide (FeS2), Crystallizes in the cubic system, hence the above, fantastically formed natural cubes of iron pyritis. The pyrites from Navajun were found during the mesozoic era, at the end of the jurassic period, approximately 120 million years ago.They originated within the sediments of a large delta that covered the Cameros Sierra. The pyrites are contemporary to the dinosaur period in the same region, of which many remains have been found near the mine.
Although pyrites are relatively abundant in nature, where they can be found either in a massive or crystallized form, it is not common to find crystals fully finished with the perfection and shine of those from Navajun mine.The high quality of the Navajuns pyrites, makes them to be appreciated by collectors the world over. They form part of the most prestigious museums and mineral collections and are exhibited in such as the Smithsonian Institute Museum in Washington, Houston, Paris, etc.
The mine at Navajun began to be worked during the nineteen sixties. Its production is used exclusively by collectors and for decoration purposes; being the only pyrite mine in the world being exploited for just these purposes.
Location - Aguilar Del Rio Alhama, La Rioja, Spain
Technical name - Iron pyrite
Informal name - Fools gold
Golden cubic crystals
Weight -16g approximately