| 释义 |
nounPlural porphyries ˈpɔːfɪriˈpɔrfəri mass nounA hard igneous rock containing crystals of feldspar in a fine-grained groundmass. 斑岩 Example sentencesExamples - Final polishing will only succeed on the hardest of stones, such as granite, porphyry, and gemstones, and again abrasive materials will be used for this, including abrasive powders or salts.
- Some of the finest cuprite specimens ever found have come from the oxidized zones of several of Arizona's porphyry copper and related deposits.
- This is particularly well known to collectors familiar with porphyry copper deposits of Arizona, New Mexico, and Utah.
- The fault places massive fractured greenstones over relatively undeformed feldspar andesite porphyry.
- This rare work of porphyry, limestone, serpentine and onyx is unique north of the Alps.
- The Henry Mountains consist of multiple intrusions of quartz-monzonite porphyries (predominantly plagioclasehornblende rocks) that were emplaced from 29.2 to 20.0 million years ago into a thick sequence of Mesozoic sediments.
- This mine, just north of the Mount Tolman porphyry molybdenum-copper deposit, was once Washington State's sole fluorite producer, with 235 tons shipped between 1918 and 1940.
- The ore is associated with plagiogranite porphyry of Mesozoic age.
- A porphyry obscures the contact between the Cross Slieve Group and the Red Arch Formation.
- Most beds are almost monomictic, comprising quartz-feldspar porphyry clasts, whereas some other beds are highly heterogeneous.
- At least two Eocene feldspar porphyry dykes or sills intrude Tsa da Glisza, and appear to have followed the same planes of weakness as the aplite dykes.
- They also noted that much kaolin is in or near decomposed porphyry bodies that overlie the largest ore shoots in the Leadville Dolomite.
- In 2000, fifty porphyry deposits had been identified in Chile, with reserves of 400 million tons of copper!
- Other possible occurrences include porphyry copper deposits that contain enargite at depth, such as Chuquicamata, Chile.
- The reference to emerald stone probably indicates color rather than medium, which suggests that the statue was carved of green basalt, granite, porphyry, or serpentine.
- During this time, many of the district's steeply dipping, northeast-trending faults were intruded by narrow, granodiorite porphyry dikes.
- The mine workings occupy much of the west side of an isolated low hill composed mainly of light-colored volcanic rock, described as felsite porphyry or trachyte, highly altered to clay minerals.
- The Main Channel conglomerate is made up of a variety of well-rounded felsite, granophyre, and quartz-feldspar porphyry pebbles, suggesting a geologically diverse source terrane.
- Although closely associated with plutonic igneous rocks, porphyry mineralization commonly encompasses large volumes of the surrounding host rocks to the intrusion.
- The sedimentary beds are composed mainly of poorly sorted subangular to rounded clasts of felsite and rhyolite porphyry that are typically a red color.
OriginLate Middle English: via medieval Latin from Greek porphuritēs, from porphura 'purple'. purple from Old English: Just as crimson is named after an insect, so purple is named after a shellfish, and at one time these two words described the same colour. The first thing to be described as purple was a crimson dye obtained from some molluscs, called porphyra in Greek, the source also of the name of the purple stone called porphyry (Late Middle English). The dye was rare and expensive and was used for colouring the robes of Roman emperors and magistrates. The actual colour of the dye varied widely, and over time the word came to mean the colour between red and blue that we now call purple. From the late 16th century purple has been used to mean ‘striking’ or ‘ornate’ in phrases such as purple prose or a purple patch. The latter term, describing an over-elaborate passage in a literary composition, is a translation of Latin purpureus pannus and comes from the Roman poet Horace's Ars Poetica: ‘Works of serious purpose and grand promise often have a purple patch or two stitched on, to shine far and wide’.
proper nounˈpɔːfɪriˈpɔrfəri (c.232–303), Neoplatonist philosopher; born Malchus. He was a pupil of Plotinus, whose works he edited after the latter's death.
nounˈpɔrfəriˈpôrfərē A hard igneous rock containing crystals, usually of feldspar, in a fine-grained, typically reddish groundmass. 斑岩 Example sentencesExamples - The fault places massive fractured greenstones over relatively undeformed feldspar andesite porphyry.
- The mine workings occupy much of the west side of an isolated low hill composed mainly of light-colored volcanic rock, described as felsite porphyry or trachyte, highly altered to clay minerals.
- A porphyry obscures the contact between the Cross Slieve Group and the Red Arch Formation.
- This mine, just north of the Mount Tolman porphyry molybdenum-copper deposit, was once Washington State's sole fluorite producer, with 235 tons shipped between 1918 and 1940.
- Final polishing will only succeed on the hardest of stones, such as granite, porphyry, and gemstones, and again abrasive materials will be used for this, including abrasive powders or salts.
- They also noted that much kaolin is in or near decomposed porphyry bodies that overlie the largest ore shoots in the Leadville Dolomite.
- This is particularly well known to collectors familiar with porphyry copper deposits of Arizona, New Mexico, and Utah.
- Most beds are almost monomictic, comprising quartz-feldspar porphyry clasts, whereas some other beds are highly heterogeneous.
- The Main Channel conglomerate is made up of a variety of well-rounded felsite, granophyre, and quartz-feldspar porphyry pebbles, suggesting a geologically diverse source terrane.
- The sedimentary beds are composed mainly of poorly sorted subangular to rounded clasts of felsite and rhyolite porphyry that are typically a red color.
- Other possible occurrences include porphyry copper deposits that contain enargite at depth, such as Chuquicamata, Chile.
- Although closely associated with plutonic igneous rocks, porphyry mineralization commonly encompasses large volumes of the surrounding host rocks to the intrusion.
- At least two Eocene feldspar porphyry dykes or sills intrude Tsa da Glisza, and appear to have followed the same planes of weakness as the aplite dykes.
- This rare work of porphyry, limestone, serpentine and onyx is unique north of the Alps.
- During this time, many of the district's steeply dipping, northeast-trending faults were intruded by narrow, granodiorite porphyry dikes.
- The ore is associated with plagiogranite porphyry of Mesozoic age.
- The reference to emerald stone probably indicates color rather than medium, which suggests that the statue was carved of green basalt, granite, porphyry, or serpentine.
- In 2000, fifty porphyry deposits had been identified in Chile, with reserves of 400 million tons of copper!
- Some of the finest cuprite specimens ever found have come from the oxidized zones of several of Arizona's porphyry copper and related deposits.
- The Henry Mountains consist of multiple intrusions of quartz-monzonite porphyries (predominantly plagioclasehornblende rocks) that were emplaced from 29.2 to 20.0 million years ago into a thick sequence of Mesozoic sediments.
OriginLate Middle English: via medieval Latin from Greek porphuritēs, from porphura ‘purple’. proper nounˈpɔrfəriˈpôrfərē (c.232–303), Neoplatonist philosopher; born Malchus. He was a student of Plotinus, whose works he edited after the latter's death.
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