单词 | greenstone |
释义 | greenstonen. 1. A green precious or semi-precious stone; spec. jade or nephrite. In later use chiefly New Zealand. ΘΚΠ society > occupation and work > materials > raw material > gem or precious stone > jade > [noun] nephritic stone1653 greenstone1658 jade1728 pounamua1771 jade-stone1775 nephrite1794 jadeite1868 ox-stone1877 kawa-kawa1880 mutton fat1912 spinach jade1958 the world > the earth > minerals > types of mineral > silicates > amphibole (double chain) > [noun] > nephrite nephritic stone1653 greenstone1658 jade1728 jade-stone1775 nephrite1794 kawa-kawa1880 spinach jade1958 1658 W. Sanderson Graphice 68 For an Emrauld or Green-stone, temper your gheereaguar with verdigreece and a little turmerick root. 1676 E. Coles Eng. Dict. Beryl, an Indian greenstone. a1771 S. Parkinson Jrnl. Voy. S. Seas (1773) ii. 119 On his ears hung a bunch of teeth, and an ear-ring of Poonamoo, or green stone. 1849 J. D. Dana U.S. Exploring Exped.: Geol. (1850) xvii. 636 The greenstone, usually called jade, used for ornaments, and also in making hatchets. 1892 F. R. Chapman (title) The working of greenstone by the Maoris. 1948 R. M. Pearl Pop. Gemol. iv. 191 Nephrite... New Zealand material is often called greenstone. 2004 P. Whitfield Rough Guide Maori N.Z. (Wanderlust ed.) 17 When not using wood, Maori carvers worked in pounamu (greenstone, or hard nephrite jade). 2. A hard, dense greenish stone used as an abrasive for sharpening or smoothing; a piece of this or a similar abrasive substance. ΘΚΠ society > occupation and work > equipment > shaping tools or equipment > [noun] > sharpening > whetstone whetstonec725 hone-stone1393 filourc1400 hone1440 rub1502 rubber1553 knife-stone1571 stone1578 oilstone1585 block1592 oil whetstone1601 greenstone1668 scythe-stone1688 water stone1703 sharping-stone1714 Scotch stone1766 honer1780 Turkey hone1794 polishing-slate1801 burr1816 Turkey stone1816 German hone1817 Arkansas1869 rag1877 rock1889 slipstone1927 1668 Inventory in J. S. Moore Goods & Chattels Forefathers (1976) 97 One greenstone and all the working tooles for husbandry 10s. 0d. 1857 R. Hunt Descriptive Guide Mus. Pract. Geol. 41 From Snowdon is also obtained the cutler's green stone. 1960 Jrnl. Canad. Dental Assoc. 26 6/2 The fractured tooth with only enamel involvement..is frequently not hypersensitive. Any rough irregularities can be gently removed with a green stone. 1977 U.S. Patent 4,021,263 1 Silicon carbide greenstones. 1998 Amer. Jrnl. Orthodontics & Dentofacial Orthopedics 114 452/1 They cleaned composite resin from debonded brackets with (1) green stones; (2) bunsen flame 3 seconds, sandblasting, and electropolishing for 20 seconds; and (3) bunsen flame 3 seconds. 3. Geology. Any of various rocks (typically altered igneous rocks) which are coloured green by feldspar, hornblende (or augite), and other minerals (cf. grunstein n.); (in later use) spec. a greenish low-grade metamorphic rock containing actinolite, epidote, and albite (cf. green schist n.). ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > greenstone grunstein1784 verd1799 greenstone1800 1800 R. Jameson Mineral. Sc. Isles Introd. p. xxiv These strata either alternate with argillaceous sandstone, wacken, or greenstone. 1826 W. Phillips Outl. Mineral. & Geol. (ed. 4) 151 The Diabase, Diorite and Amphibolite of French authors, and the Grünstein of the German School, seems to include both Green~stone and Hornblende rock. 1862 S. Smiles Lives Engineers III. 297 A remarkable bed of whinstone or greenstone. 1907 C. Reid & J. S. Flett Geol. Land's End District iii. 32 It might be possible to subdivide them into uralite diabases, diabase porphyries, diabase schists, and diabase hornfelses, but for the group as a whole it is convenient to retain the term greenstone. 1949 A. E. Trueman Geol. & Scenery Eng. & Wales xxi. 291 Between Cape Cornwall and St Ives..the cliffs are formed by hard slates and dark-green igneous rocks (known as greenstones). 1993 D. M. Morton & J. C. Matti in R. E. Powell et al. San Andreas Fault Syst. v. 219 Below the greenstone in the San Gabriel Mountains is white mica-albite-quartz schist. 2002 Whisky Mag. Aug. 53/1 Greenstone for use in parts of the distillery construction was quarried from Craggan More Hill. 4. Pharmacology. = lapis divinus n. at lapis n. Compounds. Now rare. ΚΠ 1868 C. Bader Nat. & Morbid Changes Human Eye iv. 112 Granulations are generally treated with caustics. Those commonly used are the Sulphate of Copper..; a mixture of the latter with Alum, &c. (‘the green stone’, or Lapis divinus). 1904 Guy's Hosp. Gaz. 7 May 189/1 In the more chronic cases, where the granulations have become flattened down or destroyed, be content to use green-stone and give sulphate of copper drops. Compounds C1. General attributive (chiefly in senses 1 and 3). ΚΠ 1811 J. Black tr. A. von Humboldt Polit. Ess. New Spain III. 143 The super-position of strata of basalt, amygdaloid, porphyry with greenstone base, and other rocks. 1842 H. Miller Old Red Sandstone (ed. 2) viii. 183 The greenstone bed of Salisbury Crags. 1859 A. S. Thomson Story of N.Z. I. i. vii. 140 Of these [weapons] the greenstone meri was the most esteemed. 1912 Brit. Med. Jrnl. 6 Apr. 789/2 At the time these ancient flint implements were imbedded, hills containing the greenstone strata must have occupied the position of the weald. 1971 J. McPhee Encounters with Archdruid i. 64 Park went out to look for greenstone pillows in a hill of amphibolite. 1998 P. Grace Baby No-eyes (1999) viii. 71 Round her neck was a large greenstone ornament which hung from a black ribbon. C2. greenstone belt n. Geology an extensive belt of metamorphosed volcanic rock containing major zones of greenstone, often with associated sedimentary rock and typically of Archaean age. ΘΚΠ the world > the earth > structure of the earth > structural features > [noun] > type of zone greenstone belt1872 sheeted zone1903 shatter belt1910 fault zone1931 slide area1959 fracture-zone1965 subduction zone1970 1872 Q. Jrnl. Geol. Soc. 28 292 Skirting the greenstone-belt on both sides is a series of siliceous slates and quartzites. 1922 A. H. Brooks Mineral Resources Alaska 133 The Hoosier prospect.., north of the present workings and 350 feet lower, is on a different greenstone belt. 2003 M. G. Best Igneous & Metamorphic Petrol. (ed. 2) xix. 614/2 Virtually all continents are host to small fragments of Archean greenstone belts. This entry has been updated (OED Third Edition, June 2011; most recently modified version published online March 2022). < n.1658 |
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