4348 x 4090 px | 36,8 x 34,6 cm | 14,5 x 13,6 inches | 300dpi
Data acquisizione:
20 marzo 2025
Altre informazioni:
Dense, metallic native platinum occurs as water-worn placer nuggets in the classic platinum fields near Nizhny Tagil in Russia’s Ural Mountains. These nuggets originate from erosion of ultramafic lodes rich in platinum-group elements and are concentrated mechanically in stream gravels by their extreme density and resistance to chemical weathering. Exhibiting a bright silver-gray metallic luster and malleable character, Ural platinum is historically significant as one of the earliest commercial platinum sources in the world during the 19th century.
