File:Galena, Sphalerite, Chalcopyrite (Bansko, Pirin) Coll. Georgi Bonchev at the Sofia University "St. Kliment Ohridski" Museum of Mineralogy, Petrology & Mineral Resources.jpg
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![File:Galena, Sphalerite, Chalcopyrite (Bansko, Pirin) Coll. Georgi Bonchev at the Sofia University "St. Kliment Ohridski" Museum of Mineralogy, Petrology & Mineral Resources.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Galena%2C_Sphalerite%2C_Chalcopyrite_%28Bansko%2C_Pirin%29_Coll._Georgi_Bonchev_at_the_Sofia_University_%22St._Kliment_Ohridski%22_Museum_of_Mineralogy%2C_Petrology_%26_Mineral_Resources.jpg/800px-thumbnail.jpg?20220820141903)
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