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"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.
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.
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 ...
Porphyrian trees by three authors: Purchotius (1730), Boethius (6th century), and Ramon Llull (ca. 1305). In philosophy (particularly the theory of categories), the Porphyrian tree or Tree of Porphyry is a classic device for illustrating a "scale of being" (Latin: scala praedicamentalis), attributed to the 3rd-century CE Greek neoplatonist philosopher and logician Porphyry, and revived through ...
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]
Andesite porphyry from summit of O'Leary Peak. This is an extrusive porphyritic rock, as the pink (and black) phenocrysts are clearly visible, in contrast to the grey groundmass with its microscopic crystals.
Imperial porphyry mined from Mons Porphyrites. The actual quarries were spread out over 9 square kilometres (3.5 sq mi). [5] There were five dispersed villages for workers and a central complex at Wadi Abu Ma'amel 630 metres (2,070 ft) above sea level. The highest quarries were at Rammius at 1,438 metres (4,718 ft).
Depiction of Porphyry from the Tree of Jesse at the Sucevița Monastery, 1535. On Abstinence from Eating Animals [a] (Koinē Greek: Περὶ ἀποχῆς ἐμψύχων, romanized: Peri apochēs empsychōn, Latin: De abstinentia ab esu animalium) is a 3rd-century treatise by Porphyry on the ethics of vegetarianism.