Multigeneration Quartz cluster from Borieva Mine, Madan Municipality, Smolyan Province, Bulgaria. A beautiful multigeneration quartz cluster showcasing distinct growth phases and phantom crystals from the renowned Borieva Mine, Madan Municipality, Smolyan Province, Bulgaria. This specimen displays sharp, well-defined quartz points exhibiting clear zoning of earlier and later crystal generations, a hallmark of complex hydrothermal formation processes. The Borieva Mine in Madan Municipality, Smolyan Province, Bulgaria, is part of the famous Madan ore field known for its lead and zinc deposits. Mining in this region dates back to ancient times, with the Borieva Mine including several ore bodies like Petrovitsa and Yuzhna Petrovitsa. The mine has yielded notable mineral specimens, especially galena, sphalerite, pyrite, and quartz, making it well-regarded among mineral collectors. Historically, Madan and its mines contributed significantly to the local economy and remain key sources for world-class sulfide minerals.