Mineral

Bornite-magnetite-chalcopyrite ore. A complex mineral association containing the primary ore minerals of copper and iron: bornite with a bluish tint, […]

Conglomerate. A sedimentary rock consisting of rounded fragments of gravel, small stone pieces, and aleurolitic material, cemented by a natural

Quartz ore. A sample of hydrothermal origin with quartz as the main mineral-forming component. The quartz mass contains the minerals

Coarse-grained marble with a bluish tint. A metamorphic rock whose main mineral component is calcite (CaCO₃). The sample exhibits chambered

Bornite-magnetite-chalcopyrite ore. A complex mineral association containing important ore minerals of copper and iron. Bornite is characterized by blue-to-purple hues,

Bornite-magnetite-chalcopyrite ore. The sample contains ore minerals of copper and iron. Bornite is characterized by blue iridescent shades, magnetite has

Chalcopyrite. One of the main ore minerals of copper, belonging to the sulfide group. It is characterized by a golden-yellow

Bornite (blue chalcopyrite). A mineral from the copper sulfide group. Freshly fractured, it has a bronze-red color, but under the

Fluorite (CaF₂). Light red mineral with well-developed crystals and a glassy luster. Transparent, characterized by a smooth and shiny fracture.

White calcite (CaCO₃). A transparent mineral ranging from colorless to white with a glassy luster. It features a well-defined crystalline