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porphyry 音标拼音: [p'ɔrfɚi]

n. 斑岩

斑岩

WordNet (r) 3.0 (2006) (WordNet)

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

The Collaborative International Dictionary of English v.0.48 (gcide)

Porphyry \Por"phy*ry\, n.; pl. {Porphyries}. [F. porphyre, L.
porphyrites, fr. Gr. ? like purple, fr. ? purple. See
{Purple}.] (Geol.)
A term used somewhat loosely to designate a rock consisting
of a fine-grained base (usually feldspathic) through which
crystals, as of feldspar or quartz, are disseminated. There
are red, purple, and green varieties, which are highly
esteemed as marbles.
[1913 Webster]

{Porphyry shell} (Zool.), a handsome marine gastropod shell
({Oliva porphyria}), having a dark red or brown polished
surface, marked with light spots, like porphyry.
[1913 Webster]

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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 textural term that describes any intrusive or extrusive igneous rock with consistently larger crystals set in a finer-grained matrix Metamorphic rocks showing such a texture are known as porphyroblasts
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 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
Porphyry Deposits - Geology Science
Porphyry deposits are formed through a combination of geological processes that take place over long periods of time These processes include magmatism, hydrothermal activity, and the interaction of mineral-rich fluids with the surrounding rock
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
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
NASA Scientists Explore California’s Driest Desert for Clues . . . - Edhat
Scientists are studying topaz-rich volcanic rocks at Mojave Desert to determine whether they signal the presence of porphyry copper deposits
Porphyry, the Greek Philosopher Whose Books Were Burned by Christians
Ancient Greek philosopher Porphyry was a defender of Hellenistic paganism and promoter of veganism, causing Christians to burn his books
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

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