tinguaiten.

Brit.

/ˈtɪŋɡwə(r)ʌɪt/, U.S.

/ˈtɪŋɡwəˌaɪt/

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

Etymology: < German Tinguait (H. Rosenbusch Mikrosk. Physiogr. der massigen Gesteine (ed. 2, 1887) II. 628) < the name of the Serra do Tinguá , a massif in the Serra do Mar, near to Rio de Janeiro + German -it -ite suffix¹.

Geology.

A relatively coarse-grained pale to dark green igneous rock containing alkali feldspar, nepheline, and aegirine, and typically containing needle-like crystals; a variety or specimen of this rock.Tinguaite is the hypabyssal equivalent of phonolite.

ΘΚΠ

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

picrite1868

tinguaite1890

grorudite1896

hedrumite1896

heumite1901

plumasite1903

ophiolite1937

1890 Amer. Naturalist 24 852 A tinguaite variety of these rocks is also recognized.

1965 G. J. Williams Econ. Geol. N.Z. xi. 167/2 Among these rocks is a tinguaite consisting of a network of aegirine crystals with phenocrysts of anorthoclase in a groundmass of anorthoclase, cancrinite and nepheline.

1978 S. R. Nockolds in S. R. Nockolds et al. Petrol. for Students xv. 173 Some tinguaites have small amounts of a sodalite mineral, of analcite.., or of cancrinite. More rarely, one or other of these becomes an important constituent.

2019 A. R. Woolley Alkaline Rocks & Carbonatites of World IV. 91/1 There are dykes and some irregular intrusions of tinguaite, which tend to be intimately associated with carbonatite.

This entry has been updated (OED Third Edition, March 2021; most recently modified version published online March 2022).

单词	tinguaite
释义	tinguaiten. Brit. /ˈtɪŋɡwə(r)ʌɪt/, U.S. /ˈtɪŋɡwəˌaɪt/ Origin: A borrowing from German. Etymon: German Tinguait. Etymology: < German Tinguait (H. Rosenbusch Mikrosk. Physiogr. der massigen Gesteine (ed. 2, 1887) II. 628) < the name of the Serra do Tinguá , a massif in the Serra do Mar, near to Rio de Janeiro + German -it -ite suffix¹. Geology. A relatively coarse-grained pale to dark green igneous rock containing alkali feldspar, nepheline, and aegirine, and typically containing needle-like crystals; a variety or specimen of this rock.Tinguaite is the hypabyssal equivalent of phonolite. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > hypabyssal rocks picrite1868 tinguaite1890 grorudite1896 hedrumite1896 heumite1901 plumasite1903 ophiolite1937 1890 Amer. Naturalist 24 852 A tinguaite variety of these rocks is also recognized. 1965 G. J. Williams Econ. Geol. N.Z. xi. 167/2 Among these rocks is a tinguaite consisting of a network of aegirine crystals with phenocrysts of anorthoclase in a groundmass of anorthoclase, cancrinite and nepheline. 1978 S. R. Nockolds in S. R. Nockolds et al. Petrol. for Students xv. 173 Some tinguaites have small amounts of a sodalite mineral, of analcite.., or of cancrinite. More rarely, one or other of these becomes an important constituent. 2019 A. R. Woolley Alkaline Rocks & Carbonatites of World IV. 91/1 There are dykes and some irregular intrusions of tinguaite, which tend to be intimately associated with carbonatite. This entry has been updated (OED Third Edition, March 2021; most recently modified version published online March 2022). < n.1890
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