WebPorphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit … Porphyry is the name given to decorative granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass. The larger crystals are called phenocrysts. In its non-geologic, traditional use, the term porphyry usually refers to the purple-red form of this stone, valued for its appearance, but other colour…

Why the Global Economy Deems Copper Porphyry as One of the …

WebPorphyry-related metal deposits are large-tonnage, generally low-grade, hydrothermal deposits related to igneous intrusions emplaced at high crustal levels that include many … WebDec 21, 2012 · Modeling the Formation of Porphyry-Copper Ores. Dynamic changes in the permeability of Earth's crust are needed to account for the formation of porphyry-copper … theoretical objectives examples

Porphyrische Kupferlagerstätte – Wikipedia

WebThe presence of advanced argillic alteration is often used as an indicator of a mineral deposit, particularly in the case of porphyry copper and gold deposits. The clay minerals … WebMar 11, 2015 · Large Size, Low Grade – Porphyries typically have 100 million to 5 billion tonnes of ore with a lower grade (0.2% to >1% copper). It is the size of these deposits that … Webporphyry copper deposit. primary (low grade) ore deposit of copper, consisting of porphyry rocks. Statements. subclass of. mineral deposit. of. copper. 0 references. Identifiers. … theoretical observation