Chalcopyrite copper during hydrothermal circulation. Chalcopyrite is concentrated in this environment via fluid transport. Porphyry copper ore deposits are formed by concentration of copper within a granite stock during the ascent and crystallisation of a magma. Chalcopyrite in this environment is produced by concentration within a magmatic system. Chalcopyrite is an accessory mineral in Kambalda type komatiitic nickel ore deposits, formed from an immiscible sulfide liquid in sulfide-saturated ultramafic lavas. In this environment chalcopyrite is formed by a sulfide liquid stripping copper from an immiscible silicate liquid. Chalcopyrite is the most important copper ore. Chalcopyrite ore occurs in a variety of
Western Ore Mountains Western Ore Mountains The Western Ore Mountains () is a natural region that forms the westernmost part of the Ore Mountains in the German federal state of Saxony. It is also part of the major landscape unit known as the Saxon Highlands and Uplands. It extends eastwards to include the valley of the Schwarzwasser, and, below its mouth, that of the Zwickauer Mulde, and incorporates the western parts of the former major units known as the Lower and Upper Western Ore Mountains ("Unteres und Oberes Westerzgebirge"), no. 423, as well as the Southern Slopes of the Ore Mountains ("Südabdachung des