Крупный план пегматитовой породы, демонстрирующей кристаллическую текстуру. Close-up of pegmatite rock showcasing a crystalline texture, composed predominantly of pinkish feldspar, white quartz, and black biotite. Distinct, large black crystals of schorl tourmaline (Schorlite, NaFe? Al? (BO? )? Si? O?? (OH)? ) protrude, characterized by their columnar structure. Pegmatites are known for containing rare minerals due to their slow crystallization process. The diverse color patterns and mineral assemblages indicate a rich geological history.