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  2. Porphyry copper deposit - Wikipedia

    en.wikipedia.org/wiki/Porphyry_copper_deposit

    Porphyry copper deposits represent an important resource and the dominant source of copper that is mined today to satisfy global demand. [6] Via compilation of geological data, it has been found that the majority of porphyry deposits are Phanerozoic in age and were emplaced at depths of approximately 1 to 6 kilometres with vertical thicknesses on average of 2 kilometres. [6]

  3. List of copper mines in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_mines_in...

    Anaconda Copper: Porphyry copper: Closed in 1982; now a superfund site and tourist attraction Troy Mine: Troy, Lincoln County, Montana: Revett Minerals, Hecla Mining: Closed 2015; active between 1981 and 1983, and 2005–2015 Yerington - Anaconda: Lyon County, Nevada: Anaconda Copper: Closed since 1978 Pahaquarry: Warren County, New Jersey ...

  4. Robinson Mine - Wikipedia

    en.wikipedia.org/wiki/Robinson_Mine

    The Robinson Mine is a porphyry copper deposit located at Ruth, White Pine County, Nevada, in the Egan Range, 4 miles (6.4 km) west of Ely.The mine comprises three large open pits: Liberty, Tripp-Veteran and Ruth.

  5. Porphyry - Wikipedia

    en.wikipedia.org/wiki/Porphyry

    Shoksha porphyry, quartzite of purple color resembling true porphyry mined near the village of Shoksha, Karelia, Russia; Porphyritic, the general igneous texture of a rock with two distinct crystal (phenocryst) sizes; Porphyry copper deposit, a primary (low grade) ore deposit of copper, consisting of porphyry rocks

  6. Resolution Copper - Wikipedia

    en.wikipedia.org/wiki/Resolution_copper

    Resolution Copper (RCM) is a joint venture owned by Rio Tinto and BHP formed to develop and operate an underground copper mine near Superior, Arizona, U.S. The project targets a deep-seated porphyry copper deposit located under the now inactive Magma Mine .

  7. Porphyry (geology) - Wikipedia

    en.wikipedia.org/wiki/Porphyry_(geology)

    "Imperial Porphyry" from the Red Sea Mountains of Egypt A waterworn cobble of porphyry Rhyolite porphyry from Colorado; scale bar in lower left is 1 cm (0.39 in). Porphyry (/ ˈ p ɔːr f ə r i / POR-fə-ree) is any of various 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.

  8. Hydrothermal mineral deposit - Wikipedia

    en.wikipedia.org/wiki/Hydrothermal_mineral_deposit

    Porphyry deposits account for most of the copper and molybdenum world production, 60 and 95 percent of its supply respectively. [1] Porphyry-type ore deposits form in hydrothermal fluid circulation systems developed above and around high-level, subvolcanic felsic to intermediate magma chambers and/or cooling plutons. The ore is temporally and ...

  9. Skouries mine - Wikipedia

    en.wikipedia.org/wiki/Skouries_mine

    Skouries is a gold-copper porphyry deposit centred on a small, pencil-porphyry stock that intruded schist and gneiss of the Paleozoic Vertiskos Formation of the Serbo-Macedonian Massif in northeastern Greece. The porphyry is characterized by at least four intrusive phases that are of monzonite to syenite composition, but contain an intense ...