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  2. Porphyry (geology) - Wikipedia

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

    Rhomb porphyry is a volcanic rock with gray-white large porphyritic rhombus-shaped phenocrysts of feldspar (commonly anorthoclase) embedded in a very fine-grained red-brown matrix. The composition of rhomb porphyry places it in the trachyte–latite classification of the QAPF diagram. [12]

  3. Porphyry - Wikipedia

    en.wikipedia.org/wiki/Porphyry

    Porphyry (geology), an igneous rock with large crystals in a fine-grained matrix, often purple, and prestigious Roman sculpture material; 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 ...

  4. 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]

  5. Batu Hijau mine - Wikipedia

    en.wikipedia.org/wiki/Batu_Hijau_mine

    Freeport Indonesia. The mine is located 1,530 kilometres (950 mi) east of the Indonesian capital Jakarta on Sumbawa, an island in West Nusa Tenggara Province, more precisely in the southern part of West Sumbawa Regency. The mine is the result of a ten-year exploration and construction program based on a 1999 discovery of the porphyry copper ...

  6. Category:Porphyritic rocks - Wikipedia

    en.wikipedia.org/wiki/Category:Porphyritic_rocks

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  7. Iron oxide copper gold ore deposits - Wikipedia

    en.wikipedia.org/wiki/Iron_oxide_copper_gold_ore...

    Iron oxide copper gold (IOCG) deposits are considered to be metasomatic expressions of large crustal-scale alteration events driven by intrusive activity. The deposit type was first recognised by discovery and study of the supergiant Olympic Dam copper-gold-uranium deposit (Olympic Dam mine), and South American examples.

  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. Porphyry (philosopher) - Wikipedia

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

    Porphyry of Tyre (/ ˈ p ɔːr f ɪr i /; Koinē Greek: Πορφύριος, romanized: Porphýrios; c. 234 – c. AD 305) was a Neoplatonic philosopher born in Tyre, Roman Phoenicia [1] during Roman rule.