phylliten.

Brit.

/ˈfɪlʌɪt/, U.S.

/ˈfɪˌlaɪt/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ϕύλλον , -ite suffix¹.

Etymology: < ancient Greek ϕύλλον leaf (see phyllo- comb. form) + -ite suffix¹. In sense 2 after scientific Latin Phyllites, form-genus name for unidentified fossil leaves (1833 or earlier); compare French phyllithe (1869 in Littré, also phyllite ). In sense 3 after German Phyllit ( C. F. Naumann Lehrbuch der Geognosie (1849) I. 553; replacing French phyllade (A. Brongniart et al. 1813, in Jrnl. des mines 34 35).

1. Mineralogy. Any of various minerals resembling mica in appearance, esp. a variety of ottrelite or chloritoid. Now rare.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > other micas

specular stone1577

cat-silver1585

slude1591

hammochrysos1706

cat-gold1762

micarelle1794

phyllite1828

damourite1846

roscoelite1876

micarellite1885

scyelite1885

taeniolite1899

1828 Thomson in Ann. N.Y. Lyceum Nat. Hist. 3 47 Phyllite..will probably constitute a new species.

1854 J. D. Dana Syst. Mineral. (ed. 4) I. 287 Notwithstanding the discrepancies in the analyses given here, there can be little doubt of the identity of Phyllite and Ottrelite.

1875 F. A. Genth Prelim. Rep. Min. Pennsylvania 135 Chloritoid... The variety ‘phyllite’ appears to occur in small, greenish-black scales in the siliceous lower Silurian limestone at the Pequea Mine, Lancaster county.

1987 R. L. Bates & J. A. Jackson Gloss. Geol. (ed. 3) 501/1 Phyllite. (a) A general term used by some French authors for the scaly minerals, such as the micas, chlorites, clays, and vermiculites. (b) A general term for minerals with a layered crystal structure.

†2. Geology. A fossil leaf. Obsolete. rare.Apparently only attested in dictionaries or glossaries.

ΚΠ

1843 W. Humble Dict. Geol. Phyllite, a petrified leaf.

1987 Amer. Jrnl. Bot. 74 1520/1 Most specimens could not be identified, and were assigned to artificial genera such as Phyllites, or were misidentified.]

3. Geology. A fine-grained metamorphic rock with a well-developed schistosity, intermediate between slate and schist, having a shiny, often corrugated, cleavage surface and characterized by microcrystalline mica or chlorite arranged in parallel with the foliation.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > schist > varieties of

hammochrysos1706

hornslate1791

hornblende slate1794

horn porphyry1794

horn-schist1799

mica-slate1809

green schist1817

hornblende schist1821

kinzigite1878

phyllite1878

spilosite1882

mylonite1885

1878 G. W. Hawes in C. H. Hitchcock Geol. New Hampsh. iv. 218 Here are included the rocks called phyllite, and the larger part of those called hydro-mica slate.

1886 A. Geikie Class-bk. Geol. 223 By increase of its mica-flakes a clay-slate passes into a phyllite.

1918 H. E. Gregory Mil. Geol. & Topogr. i. 12 The continued induration of slate with intense compression and shearing produces clay schist or phyllite... It is not suitable for concrete work but makes fair road material.

1963 Ooi Jin-Bee Land, People & Econ. in Malaya i. 11 Schists and phyllites weather readily to clay.

1990 C. Pellant Rocks, Minerals & Fossils 27/1 Phyllites are slightly coarser grained than slates and wavy foliation replaces cleavage.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	phyllite
释义	phylliten. Brit. /ˈfɪlʌɪt/, U.S. /ˈfɪˌlaɪt/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ϕύλλον , -ite suffix¹. Etymology: < ancient Greek ϕύλλον leaf (see phyllo- comb. form) + -ite suffix¹. In sense 2 after scientific Latin Phyllites, form-genus name for unidentified fossil leaves (1833 or earlier); compare French phyllithe (1869 in Littré, also phyllite ). In sense 3 after German Phyllit ( C. F. Naumann Lehrbuch der Geognosie (1849) I. 553; replacing French phyllade (A. Brongniart et al. 1813, in Jrnl. des mines 34 35). 1. Mineralogy. Any of various minerals resembling mica in appearance, esp. a variety of ottrelite or chloritoid. Now rare. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > other micas specular stone1577 cat-silver1585 slude1591 hammochrysos1706 cat-gold1762 micarelle1794 phyllite1828 damourite1846 roscoelite1876 micarellite1885 scyelite1885 taeniolite1899 1828 Thomson in Ann. N.Y. Lyceum Nat. Hist. 3 47 Phyllite..will probably constitute a new species. 1854 J. D. Dana Syst. Mineral. (ed. 4) I. 287 Notwithstanding the discrepancies in the analyses given here, there can be little doubt of the identity of Phyllite and Ottrelite. 1875 F. A. Genth Prelim. Rep. Min. Pennsylvania 135 Chloritoid... The variety ‘phyllite’ appears to occur in small, greenish-black scales in the siliceous lower Silurian limestone at the Pequea Mine, Lancaster county. 1987 R. L. Bates & J. A. Jackson Gloss. Geol. (ed. 3) 501/1 Phyllite. (a) A general term used by some French authors for the scaly minerals, such as the micas, chlorites, clays, and vermiculites. (b) A general term for minerals with a layered crystal structure. †2. Geology. A fossil leaf. Obsolete. rare.Apparently only attested in dictionaries or glossaries. ΚΠ 1843 W. Humble Dict. Geol. Phyllite, a petrified leaf. 1987 Amer. Jrnl. Bot. 74 1520/1 Most specimens could not be identified, and were assigned to artificial genera such as Phyllites, or were misidentified.] 3. Geology. A fine-grained metamorphic rock with a well-developed schistosity, intermediate between slate and schist, having a shiny, often corrugated, cleavage surface and characterized by microcrystalline mica or chlorite arranged in parallel with the foliation. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > schist > varieties of hammochrysos1706 hornslate1791 hornblende slate1794 horn porphyry1794 horn-schist1799 mica-slate1809 green schist1817 hornblende schist1821 kinzigite1878 phyllite1878 spilosite1882 mylonite1885 1878 G. W. Hawes in C. H. Hitchcock Geol. New Hampsh. iv. 218 Here are included the rocks called phyllite, and the larger part of those called hydro-mica slate. 1886 A. Geikie Class-bk. Geol. 223 By increase of its mica-flakes a clay-slate passes into a phyllite. 1918 H. E. Gregory Mil. Geol. & Topogr. i. 12 The continued induration of slate with intense compression and shearing produces clay schist or phyllite... It is not suitable for concrete work but makes fair road material. 1963 Ooi Jin-Bee Land, People & Econ. in Malaya i. 11 Schists and phyllites weather readily to clay. 1990 C. Pellant Rocks, Minerals & Fossils 27/1 Phyllites are slightly coarser grained than slates and wavy foliation replaces cleavage. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). > see also also refers to : -phyllitecomb. form < n.1828 see also
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phylliten.

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