Mineral: Cookeite and Pyrite
Locality: Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja, Spain
Dimensions: 13mm on edge pyrite

Description: The coating around the pyrite cubes of Navajún is Cookeite, that gives them an appearance of being gift-wrapped. Here we see the Cookeite at the bottom of the cube. I believe this cookeite protects the edges of the pyrite cubes.

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