WebPorphyry definition, a very hard rock, anciently quarried in Egypt, having a dark, purplish-red groundmass containing small crystals of feldspar. See more. 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 … See more Most igneous rocks have some degree of porphyritic texture. This is because most magma from which igneous rock solidifies is produced by partial melting of a mixture of different minerals. At first the mixed melt slowly cools … See more In countries where many automobiles have studded winter tires such as Sweden, Finland, and Norway, it is common that highways are paved … See more • Pictures of the Mons Porphyrites, Red Sea, Egypt. • Rhomb porphyry lavas at the Wayback Machine (archived May 20, 2008) • Flash showing rhomb porphyry formation at the Wayback Machine (archived December 24, 2007) See more Antiquity and Byzantium To the Romans it was known as Lapis porphyrites. Pliny the Elder's Natural History (36, 11) affirmed that the "Imperial Porphyry" had been … See more • List of rock textures – List of rock textural and morphological terms • Quartz-porphyry – Type of volcanic rock containing large porphyritic crystals of quartz • Sarcophagi of Helena and Constantina – Ancient Roman sarcophagi See more
Porphyry Definition & Meaning - Merriam-Webster
WebPorphyries are reasonably common, but the rock from which this sculpture was carved, Imperial Red Porphyry, is rare, valuable and has historic significance. The stone came … WebSep 2, 2024 · This discussion is not about Porphyry, the Tyrian Neoplatonic philosopher, the porphyry house system, or the tree of porphyry. What is porphyry – Geological porphyry … burke chair
Porphyry (geology) - Wikipedia
WebJan 21, 2024 · Healing crystals for wealth. Tiger’s eye: said to provide motivation and lessen fear. Citrine: believed to spark enthusiasm, creativity, and concentration. Turquoise: … WebThe related term ‘porphyry‘ is a general term denoting any igneous rock with a porphyritic texture. Meaning of porphyritic textures The presence of large crystals in a fine-grained groundmass is commonly regarded to indicate that the phenocrystals crystallized slowly during magma ascent or in a magma chamber, before the crystallization of the … WebPorphyry, the name of that stone, was used for statues, artifacts, and sarcophagus. In the Roman age, porphyry stone was believed to give good luck, and the word “ porfirogenito ” … burke chevy northampton