palagoniten.

Brit.

/pəˈlaɡənʌɪt/, U.S.

/pəˈlæɡəˌnaɪt/

Origin: A borrowing from German. Etymon: German Palagonit.

Etymology: < German Palagonit (W. S. von Waltershausen 1845, in Göttinger Studien i. 402) < Palagonia , the name of a city in Sicily where the substance can be found + -it -ite suffix¹.

Mineralogy and Geology.

A yellowish or brownish siliceous substance formed by the hydration and chemical alteration of basaltic glass, and occurring in vitreous basaltic tuffs that have undergone rapid chilling.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > trap > basalt > other basaltic

bluestone1849

palagonite1851

tholeiite1866

tachylite1868

anamesite1876

dhu stone1879

hyalomelan1879

tephrite1879

shoshonite1895

pseudotachylite1917

ankaramite1926

oceanite1926

1851 C. Darwin Corr. (1989) V. 70 Palagonite of Bunsen ought to be introduced.

1854 J. D. Dana Syst. Mineral. (ed. 4) 167 The origin of the Palagonite is..attributed to the alteration of pyroxene rocks, in which process the iron is peroxydized.

1879 F. Rutley Study of Rocks xiii. 272 Under the microscope palagonite appears as a perfectly amorphous substance.

1920 A. Holmes Nomencl. Petrol. 175 Palagonite is a soft, brown or greenish-black cryptocrystalline substance.

1985 R. Thorpe & G. Brown Field Descr. Igneous Rocks vi. 73 Palagonite may form subaerially or below water.

1999 Proc. National Acad. Sci. U.S.A. 96 8835/2 Crushed serpentine (a hydrated magnesium silicate) and palagonite (an amorphous, weathered basaltic glass) were heated at 500° C for several hours.

Compounds

palagonite tuff n. a basaltic tuff containing angular fragments of basaltic glass that has altered to palagonite.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > volcanic tuff > varieties of

peperino1745

piperine1846

palagonite tuff1863

1863 S. Baring-Gould Iceland 208 The hill is composed of Palagonite tuff.

1914 Brit. Mus.: Return 229 in Parl. Papers (H.C. 186) LXXI. 193 Volcanic lapilli and palagonite-tuff from Monte Brazil, Terceira, Azores.

1991 Geophysical Res. Lett. 18 2238/2 The most highly reflective spectrum is that of the palagonite tuff.

This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).

单词	palagonite
释义	palagoniten. Brit. /pəˈlaɡənʌɪt/, U.S. /pəˈlæɡəˌnaɪt/ Origin: A borrowing from German. Etymon: German Palagonit. Etymology: < German Palagonit (W. S. von Waltershausen 1845, in Göttinger Studien i. 402) < Palagonia , the name of a city in Sicily where the substance can be found + -it -ite suffix¹. Mineralogy and Geology. A yellowish or brownish siliceous substance formed by the hydration and chemical alteration of basaltic glass, and occurring in vitreous basaltic tuffs that have undergone rapid chilling. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > trap > basalt > other basaltic bluestone1849 palagonite1851 tholeiite1866 tachylite1868 anamesite1876 dhu stone1879 hyalomelan1879 tephrite1879 shoshonite1895 pseudotachylite1917 ankaramite1926 oceanite1926 1851 C. Darwin Corr. (1989) V. 70 Palagonite of Bunsen ought to be introduced. 1854 J. D. Dana Syst. Mineral. (ed. 4) 167 The origin of the Palagonite is..attributed to the alteration of pyroxene rocks, in which process the iron is peroxydized. 1879 F. Rutley Study of Rocks xiii. 272 Under the microscope palagonite appears as a perfectly amorphous substance. 1920 A. Holmes Nomencl. Petrol. 175 Palagonite is a soft, brown or greenish-black cryptocrystalline substance. 1985 R. Thorpe & G. Brown Field Descr. Igneous Rocks vi. 73 Palagonite may form subaerially or below water. 1999 Proc. National Acad. Sci. U.S.A. 96 8835/2 Crushed serpentine (a hydrated magnesium silicate) and palagonite (an amorphous, weathered basaltic glass) were heated at 500° C for several hours. Compounds palagonite tuff n. a basaltic tuff containing angular fragments of basaltic glass that has altered to palagonite. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > volcanic tuff > varieties of peperino1745 piperine1846 palagonite tuff1863 1863 S. Baring-Gould Iceland 208 The hill is composed of Palagonite tuff. 1914 Brit. Mus.: Return 229 in Parl. Papers (H.C. 186) LXXI. 193 Volcanic lapilli and palagonite-tuff from Monte Brazil, Terceira, Azores. 1991 Geophysical Res. Lett. 18 2238/2 The most highly reflective spectrum is that of the palagonite tuff. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.1851
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