hedrumiten.

/ˈhɛdrəmʌɪt/

Etymology: < German hedrumit (W. C. Brögger 1890, in Zeitschr. f. Kryst. u. Min. XVI. 40), < Hedrum , the name of a village north of Larvik, Norway + -ite suffix¹.

Geology.

A hypabyssal porphyritic igneous rock having a trachytic texture and consisting essentially of a potash-feldspar with small amounts of pyribole and usually also nepheline.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > hypabyssal rocks

picrite1868

tinguaite1890

grorudite1896

hedrumite1896

heumite1901

plumasite1903

ophiolite1937

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > porphyrite rock > varieties of

red rock1721

oriental verd-antique1852

kersanton1862

kersantite1868

uralite-porphyry1868

monchiquite1891

vogesite1891

camptonite1895

hedrumite1896

wyomingite1897

spessartite1908

rhyodacite1913

rhyolite1932

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

rhyolite1861

nevadite1868

propylite1868

trachyte tuff1885

ciminite1896

grorudite1896

hedrumite1896

kenyte1900

mugearite1904

1896 J. F. Kemp Handbk. Rocks 141 Hedrumite, a name proposed by Brögger for certain syenitic rocks that are poor or lacking in nepheline, but that have a trachytic texture.

1920 A. Holmes Nomencl. Petrol. 116 Hedrumite... A leucocratic variety of alkali-syenite containing accessory nepheline.

1938 A. Johannsen Descr. Petrogr. Igneous Rocks IV. i. 25 Hedrumites..are essentially pulaskite-porphyries with a coarse trachytic texture. Brögger defined them as the mineralogical and chemical hypabyssal-trachytoid-equivalents of the pulaskites.

1964 Mineral. Abstr. 16 574/1 Senonian hedrumites cutting somewhat earlier andesites and pyroclastics have been found..in Bulgaria.

This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).

单词	hedrumite
释义	hedrumiten. /ˈhɛdrəmʌɪt/ Etymology: < German hedrumit (W. C. Brögger 1890, in Zeitschr. f. Kryst. u. Min. XVI. 40), < Hedrum , the name of a village north of Larvik, Norway + -ite suffix¹. Geology. A hypabyssal porphyritic igneous rock having a trachytic texture and consisting essentially of a potash-feldspar with small amounts of pyribole and usually also nepheline. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > hypabyssal rocks picrite1868 tinguaite1890 grorudite1896 hedrumite1896 heumite1901 plumasite1903 ophiolite1937 the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > porphyrite rock > varieties of red rock1721 oriental verd-antique1852 kersanton1862 kersantite1868 uralite-porphyry1868 monchiquite1891 vogesite1891 camptonite1895 hedrumite1896 wyomingite1897 spessartite1908 rhyodacite1913 rhyolite1932 the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > volcanic rocks > trachyte > varieties of rhyolite1861 nevadite1868 propylite1868 trachyte tuff1885 ciminite1896 grorudite1896 hedrumite1896 kenyte1900 mugearite1904 1896 J. F. Kemp Handbk. Rocks 141 Hedrumite, a name proposed by Brögger for certain syenitic rocks that are poor or lacking in nepheline, but that have a trachytic texture. 1920 A. Holmes Nomencl. Petrol. 116 Hedrumite... A leucocratic variety of alkali-syenite containing accessory nepheline. 1938 A. Johannsen Descr. Petrogr. Igneous Rocks IV. i. 25 Hedrumites..are essentially pulaskite-porphyries with a coarse trachytic texture. Brögger defined them as the mineralogical and chemical hypabyssal-trachytoid-equivalents of the pulaskites. 1964 Mineral. Abstr. 16 574/1 Senonian hedrumites cutting somewhat earlier andesites and pyroclastics have been found..in Bulgaria. This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018). < n.1896
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