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Porphyry (geology)

Index Porphyry (geology)

Porphyry is a textural term for an igneous rock consisting of large-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate rich, generally aphanitic matrix or groundmass. [1]

76 relations: Ancient Greek, Andesite, Antarctica, Aphanite, Arabian-Nubian Shield, Basalt, Carbonate rock, Column of Constantine, Copper, Crete, Crystal, East African Rift, Eastern Desert, Egypt, Emperor, Feldspar, Gold, Granite, Great Palace of Constantinople, Hagia Sophia, Hydreuma, Igneous rock, James Burton (Egyptologist), John Gardner Wilkinson, Kiev, Knossos, Latite, Lava, Lead, List of rock textures, Magma, Matrix (geology), Minoan civilization, Molybdenum, Mount Erebus, Mount Kilimanjaro, Muhammad Ali of Egypt, Napoleon, Natural History (Pliny), Norway, Oslo Graben, Oxford Dictionary of Byzantium, Oxford University Press, Pantheon, Rome, Phanerite, Phenocryst, Plagioclase, Porphyritic, Ptolemy, Purple, ..., QAPF diagram, Qena, Quartz, Quartz-porphyry, Renaissance, Rhenium, Rhombus, Rift, Rock (geology), Rock microstructure, Roman Empire, Ross Sea, Sarcophagi of Helena and Constantina, Silicate, Skarn, Stone quarries of ancient Egypt, Strabo, Subvolcanic rock, Tin, Toga, Trachyte, Tungsten, Tyrian purple, Volcanic rock, Volcano, Zinc. Expand index (26 more) »

Ancient Greek

The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.

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Andesite is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture.

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Antarctica is Earth's southernmost continent.

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Aphanite, or aphanitic as an adjective (from the Greek αφανης, "invisible"), is a name given to certain igneous rocks that are so fine-grained that their component mineral crystals are not detectable by the unaided eye (as opposed to phaneritic igneous rocks, where the minerals are visible to the unaided eye).

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Arabian-Nubian Shield

The Arabian-Nubian Shield (ANS) is an exposure of Precambrian crystalline rocks on the flanks of the Red Sea.

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Basalt is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon.

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Carbonate rock

Carbonate rocks are a class of sedimentary rocks composed primarily of carbonate minerals.

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Column of Constantine

The Column of Constantine (Çemberlitaş Sütunu, from çemberli 'hooped' and taş 'stone'), also known as the Burnt Stone or the Burnt Pillar, is a Roman monumental column constructed on the orders of the Roman emperor Constantine the Great in 330 AD.

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Copper is a chemical element with symbol Cu (from cuprum) and atomic number 29.

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Crete (Κρήτη,; Ancient Greek: Κρήτη, Krḗtē) is the largest and most populous of the Greek islands, the 88th largest island in the world and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and Corsica.

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A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

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East African Rift

The East African Rift (EAR) is an active continental rift zone in East Africa.

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Eastern Desert

The Eastern Desert is the part of the Sahara desert that is located east of the Nile river, between the river and the Red Sea.

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Egypt (مِصر, مَصر, Khēmi), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia by a land bridge formed by the Sinai Peninsula.

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An emperor (through Old French empereor from Latin imperator) is a monarch, usually the sovereign ruler of an empire or another type of imperial realm.

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Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals that make up about 41% of the Earth's continental crust by weight.

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Gold is a chemical element with symbol Au (from aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally.

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Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.

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Great Palace of Constantinople

The Great Palace of Constantinople (Μέγα Παλάτιον, Méga Palátion; Latin: Palatium Magnum, Turkish: Büyük Saray), also known as the Sacred Palace (Ἱερὸν Παλάτιον, Hieròn Palátion; Latin: Sacrum Palatium), was the large Imperial Byzantine palace complex located in the south-eastern end of the peninsula now known as Old Istanbul (formerly Constantinople), in modern Turkey.

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Hagia Sophia

Hagia Sophia (from the Greek Αγία Σοφία,, "Holy Wisdom"; Sancta Sophia or Sancta Sapientia; Ayasofya) is a former Greek Orthodox Christian patriarchal basilica (church), later an Ottoman imperial mosque and now a museum (Ayasofya Müzesi) in Istanbul, Turkey.

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In Hellenistic and Roman Arabia and Egypt, a hydreuma (plural hydreumata) was an enclosed (and often fortified) "watering station" (Classical Latin hydreuma Lewis, C.T. & Short, C. (1879). A Latin dictionary founded on Andrews' edition of Freund's Latin dictionary. Oxford: Clarendon Press. from Ancient Greek ὕδρευμαLiddell, H.G. & Scott, R. (1940). A Greek-English Lexicon. revised and augmented throughout by Sir Henry Stuart Jones. with the assistance of. Roderick McKenzie. Oxford: Clarendon Press. from ὕδωρ, water) at wadis in dry regions.

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Igneous rock

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.

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James Burton (Egyptologist)

James Burton (22 September 1786 – 22 February 1862) (formerly James Haliburton and latterly James Haliburton) was an early British Egyptologist, known for his pioneering exploration and mapping of the Valley of the Kings, during which he became the first individual of the modern age to enter KV5; his pioneering excavations at Karnak, during which he discovered the Karnak king list; and his excavations at Medinet Habu, during which he was part of the team that discovered TT391.

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John Gardner Wilkinson

Sir John Gardner Wilkinson (5 October 1797 – 29 October 1875) was an English traveller, writer and pioneer Egyptologist of the 19th century.

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Kiev or Kyiv (Kyiv; Kiyev; Kyjev) is the capital and largest city of Ukraine, located in the north central part of the country on the Dnieper.

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Knossos (also Cnossos, both pronounced; Κνωσός, Knōsós) is the largest Bronze Age archaeological site on Crete and has been called Europe's oldest city.

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Latite is an igneous, volcanic rock, with aphanitic-aphyric to aphyric-porphyritic texture.

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Lava is molten rock generated by geothermal energy and expelled through fractures in planetary crust or in an eruption, usually at temperatures from.

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Lead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82.

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List of rock textures

This page is intended to be a list of rock textural and morphological terms.

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Magma (from Ancient Greek μάγμα (mágma) meaning "thick unguent") is a mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth, and is expected to exist on other terrestrial planets and some natural satellites.

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Matrix (geology)

The matrix or groundmass of rock is the finer-grained mass of material wherein larger grains, crystals or clasts are embedded.

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Minoan civilization

The Minoan civilization was an Aegean Bronze Age civilization on the island of Crete and other Aegean Islands which flourished from about 2600 to 1600 BC, before a late period of decline, finally ending around 1100.

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Molybdenum is a chemical element with symbol Mo and atomic number 42.

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Mount Erebus

Mount Erebus is the second-highest volcano in Antarctica (after Mount Sidley) and the southernmost active volcano on Earth.

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Mount Kilimanjaro

Mount Kilimanjaro or just Kilimanjaro, with its three volcanic cones, "Kibo", "Mawenzi", and "Shira", is a dormant volcano in Tanzania.

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Muhammad Ali of Egypt

Muhammad Ali Pasha al-Mas'ud ibn Agha (محمد علی پاشا المسعود بن آغا; محمد علي باشا / ALA-LC: Muḥammad ‘Alī Bāshā; Albanian: Mehmet Ali Pasha; Turkish: Kavalalı Mehmet Ali Paşa; 4 March 1769 – 2 August 1849) was an Ottoman Albanian commander in the Ottoman army, who rose to the rank of Pasha, and became Wāli, and self-declared Khedive of Egypt and Sudan with the Ottomans' temporary approval.

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Napoléon Bonaparte (15 August 1769 – 5 May 1821) was a French statesman and military leader who rose to prominence during the French Revolution and led several successful campaigns during the French Revolutionary Wars.

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Natural History (Pliny)

The Natural History (Naturalis Historia) is a book about the whole of the natural world in Latin by Pliny the Elder, a Roman author and naval commander who died in 79 AD.

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Norway (Norwegian: (Bokmål) or (Nynorsk); Norga), officially the Kingdom of Norway, is a unitary sovereign state whose territory comprises the western portion of the Scandinavian Peninsula plus the remote island of Jan Mayen and the archipelago of Svalbard.

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Oslo Graben

The Oslo Graben or Oslo Rift is a graben formed during a geologic rifting event in Permian time, the last phase of the Variscan orogeny.

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Oxford Dictionary of Byzantium

The Oxford Dictionary of Byzantium (often abbreviated to ODB) is a three-volume historical dictionary published by the English Oxford University Press.

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Oxford University Press

Oxford University Press (OUP) is the largest university press in the world, and the second oldest after Cambridge University Press.

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Pantheon, Rome

The Pantheon (or; Pantheum,Although the spelling Pantheon is standard in English, only Pantheum is found in classical Latin; see, for example, Pliny, Natural History: "Agrippae Pantheum decoravit Diogenes Atheniensis". See also Oxford Latin Dictionary, s.v. "Pantheum"; Oxford English Dictionary, s.v.: "post-classical Latin pantheon a temple consecrated to all the gods (6th cent.; compare classical Latin pantheum". from Greek Πάνθειον Pantheion, " of all the gods") is a former Roman temple, now a church, in Rome, Italy, on the site of an earlier temple commissioned by Marcus Agrippa during the reign of Augustus (27 BC – 14 AD). It was completed by the emperor Hadrian and probably dedicated about 126 AD. Its date of construction is uncertain, because Hadrian chose not to inscribe the new temple but rather to retain the inscription of Agrippa's older temple, which had burned down. The building is circular with a portico of large granite Corinthian columns (eight in the first rank and two groups of four behind) under a pediment. A rectangular vestibule links the porch to the rotunda, which is under a coffered concrete dome, with a central opening (oculus) to the sky. Almost two thousand years after it was built, the Pantheon's dome is still the world's largest unreinforced concrete dome. The height to the oculus and the diameter of the interior circle are the same,. It is one of the best-preserved of all Ancient Roman buildings, in large part because it has been in continuous use throughout its history, and since the 7th century, the Pantheon has been used as a church dedicated to "St. Mary and the Martyrs" (Sancta Maria ad Martyres) but informally known as "Santa Maria Rotonda". The square in front of the Pantheon is called Piazza della Rotonda. The Pantheon is a state property, managed by Italy's Ministry of Cultural Heritage and Activities and Tourism through the Polo Museale del Lazio; in 2013 it was visited by over 6 million people. The Pantheon's large circular domed cella, with a conventional temple portico front, was unique in Roman architecture. Nevertheless, it became a standard exemplar when classical styles were revived, and has been copied many times by later architects.

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A phanerite is an igneous rock whose microstructure is made up of crystals large enough to be distinguished with the unaided eye.

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1 euro coin (diameter 2.3 cm) for scale. A phenocryst is an early forming, relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of an igneous rock.

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Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group.

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Porphyritic is an adjective used in geology, specifically for igneous rocks, for a rock that has a distinct difference in the size of the crystals, with at least one group of crystals obviously larger than another group.

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Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.

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Purple is a color intermediate between blue and red.

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QAPF diagram

A QAPF diagram is a double ternary diagram which is used to classify igneous rocks based on mineralogic composition.

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Qena (Qinā , Egyptian Arabic:, locally:; ⲕⲱⲛⲏ Kone) is a city in Upper Egypt, and the capital of the Qena Governorate.

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Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2.

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Quartz-porphyry, in layman's terms, is a type of volcanic (igneous) rock containing large porphyritic crystals of quartz.

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The Renaissance is a period in European history, covering the span between the 14th and 17th centuries.

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Rhenium is a chemical element with symbol Re and atomic number 75.

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In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a simple (non-self-intersecting) quadrilateral whose four sides all have the same length.

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In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics.

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Rock (geology)

Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids.

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Rock microstructure

Rock microstructure includes the texture of a rock and the small scale rock structures.

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Roman Empire

The Roman Empire (Imperium Rōmānum,; Koine and Medieval Greek: Βασιλεία τῶν Ῥωμαίων, tr.) was the post-Roman Republic period of the ancient Roman civilization, characterized by government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia.

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Ross Sea

The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment.

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Sarcophagi of Helena and Constantina

The Sarcophagi of Helena and Constantina are two fourth century porphyry sarcophagi in Rome.

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In chemistry, a silicate is any member of a family of anions consisting of silicon and oxygen, usually with the general formula, where 0 ≤ x Silicate anions are often large polymeric molecules with an extense variety of structures, including chains and rings (as in polymeric metasilicate), double chains (as in, and sheets (as in. In geology and astronomy, the term silicate is used to mean silicate minerals, ionic solids with silicate anions; as well as rock types that consist predominantly of such minerals. In that context, the term also includes the non-ionic compound silicon dioxide (silica, quartz), which would correspond to x.

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Skarns or tactites are hard, coarse-grained metamorphic rocks that form by a process called Metasomatism.

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Stone quarries of ancient Egypt

The stone quarries of ancient Egypt once produced quality stone for the construction of decorative monuments such as sculptures and obelisks.

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Strabo (Στράβων Strábōn; 64 or 63 BC AD 24) was a Greek geographer, philosopher, and historian who lived in Asia Minor during the transitional period of the Roman Republic into the Roman Empire.

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Subvolcanic rock

A subvolcanic rock, also known as a hypabyssal rock, is an intrusive igneous rock that is emplaced at medium to shallow depths (>2 km) within the crust, and has intermediate grain size and often porphyritic texture between that of volcanic and plutonic rocks.

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Tin is a chemical element with the symbol Sn (from stannum) and atomic number 50.

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The toga, a distinctive garment of Ancient Rome, was a roughly semicircular cloth, between in length, draped over the shoulders and around the body.

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Trachyte is an igneous volcanic rock with an aphanitic to porphyritic texture.

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Tungsten, or wolfram, is a chemical element with symbol W (referring to wolfram) and atomic number 74.

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Tyrian purple

Tyrian purple (Greek, πορφύρα, porphyra, purpura), also known as Tyrian red, Phoenician purple, royal purple, imperial purple or imperial dye, is a reddish-purple natural dye.

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Volcanic rock

Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from magma erupted from a volcano.

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A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

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Zinc is a chemical element with symbol Zn and atomic number 30.

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[1] https://en.wikipedia.org/wiki/Porphyry_(geology)

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