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porphyry    音标拼音: [p'ɔrfɚi]
n. 斑岩

斑岩

porphyry
n 1: any igneous rock with crystals embedded in a finer
groundmass of minerals [synonym: {porphyry}, {porphyritic
rock}]


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  • Porphyry (geology) - Wikipedia
    Porphyry ( ˈpɔːrfəri 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
  • What Is Porphyry? How Does It Form, and In Which Rocks?
    Porphyry is a term that describes extrusive or intrusive igneous rocks with large-grained crystals embedded in a finer-grain matrix
  • Porphyry of Tyre - Wikipedia
    Porphyry ( ˈpɔːrfɪri ; Koine Greek: Πορφύριος, romanized: Porphýrios; c 234 – c 305) was a Phoenician [1][2] Neoplatonic philosopher born in Tyre, Roman Phoenicia [3] during Roman rule [a][3][4] He edited and published the Enneads, the only collection of the work of Plotinus, his teacher He wrote original works in the Greek language on a wide variety of topics, ranging
  • PORPHYRY Definition Meaning - Merriam-Webster
    The meaning of PORPHYRY is a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass
  • Porphyry Deposits - Geology Science
    Porphyry deposits are a type of mineral deposit that form from large-scale hydrothermal systems associated with intrusive igneous rocks They are characterized by the presence of porphyritic rocks that contain large crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass) The mineralization in porphyry deposits is typically associated with hydrothermal fluids that circulate
  • Porphyry (geology) - New World Encyclopedia
    Porphyry is a variety of igneous rock consisting of large-grained crystals, such as feldspar or quartz, dispersed in a fine-grained feldspathic [1] matrix or groundmass The larger crystals are called phenocrysts In its traditional, non-geologic use, the term "porphyry" refers to the purple-red form of this stone, valued for its appearance Later, the name was generalized to igneous rocks
  • Porphyry | geological feature | Britannica
    (A porphyry is an igneous rock containing conspicuous crystals, called phenocrysts, surrounded by a matrix of finer-grained minerals or glass or both ) In most rocks, both alkali and plagioclase feldspars occur as irregularly shaped grains with only a few or no crystal faces
  • Here Is Everything to Know about Porphyritic Granite Rocks
    Granite porphyry describes granite rocks with large crystals in a finer-grained matrix but with the same mineralogy and chemistry as ordinary granite rocks So, porphyry (pronounced as POR-fə-ree) only indicates the texture A more accurate name for these rocks is porphyritic granite The formation of granite porphyry suggests two-stage cooling An earlier, slow cooling forms the larger
  • Porphyry In Geology and Rock Examples? | Earth Know
    Porphyry refers to igneous rocks with large, well-formed crystals in a finer-grained matrix common in andesite, basalt, rhyolite, or granite
  • What Is Porphyry Stone? Its Formation and Uses
    Porphyry is a type of igneous rock characterized by a distinctive porphyritic texture rather than a single mineral composition This volcanic stone forms when magma partially cools, resulting in a dual-sized crystal structure that provides a unique visual appearance and exceptional durability Historically, the term originated from a prized purple-red variety used by ancient royalty Today





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