Fossils

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

Aragonite. A pale yellow mineral with a glassy luster. Translucent, brittle, and easily broken under mechanical stress. Aragonite is a

Diorite porphyrite. A magmatic rock, classified as a hypabyssal (subvolcanic) intrusive formation. By composition, it is close to diorite but

Quartz part. A mineral specimen consisting of quartz with inclusions of wolframite, pyrite, and bismuthinite. This mineral association formed as

Bornite. A ore sample of bornite-magnetite-chalcopyrite type. It contains minerals like bornite, magnetite, and chalcopyrite. Bornite is characterized by a

Rock crystal. A variety of quartz, represented by transparent crystals of prismatic shape. The surface of the crystals is covered

Chalcopyrite. A mineral sample of chalcopyrite-arsenopyrite type in a calcite-quartz mineral association. Chalcopyrite has a predominant brownish-yellow color and a

The association of chlorite, chalcopyrite, and arsenopyrite. The sample contains the minerals chlorite, chalcopyrite, and arsenopyrite. Chlorite is black, chalcopyrite