Chalcopyrite, Galena and Sphalerite on Quartz matrix from Septemvri Mine, Madan Municipality, Smolyan Province, Bulgaria. A captivating mineral specimen from the historic Septemvri Mine in the renowned Madan ore field, Bulgaria. This piece features vibrant chalcopyrite crystals shimmering with metallic gold hues, naturally intergrown with lustrous galena and rich, dark sphalerite, all elegantly perched on a clear quartz matrix. The Septemvri Mine, located in Madan Municipality, Smolyan Province, Bulgaria, is a historically significant lead-zinc mine within the famous Madan ore district. Originally named "Deveti Septemvri" (9th of September Mine) from 1953 to 1989, it was renamed "Septemvri Mine" thereafter. The mine comprises several deposits—such as Sharenka, Baram, Mogilata, Osikovo, and Pechinsko—and is renowned for producing high-quality specimens of minerals like galena, sphalerite, pyrite, and quartz. Mining in the Madan region began as far back as the 5th century BC, making this area rich in both mineralogical and historical heritage.Historically, Madan and its mines contributed significantly to the local economy and remain key sources for world-class sulfide minerals.