dichroiten.

Brit.

/ˈdʌɪkrəʊʌɪt/, U.S.

/ˈdaɪkroʊˌaɪt/

Forms: 1800s dichroit, 1800s dichroït, 1800s– dichroite.

Origin: A borrowing from French. Etymon: French dichroïte.

Etymology: < French dichroïte (L. Cordier 1809, in Journal des mines 25 129, following a suggestion from R. J. Haüy) < ancient Greek δίχρους (uncontracted δίχροος : see dichroous adj.) + French ite -ite suffix¹. Compare German Dichroit (1809). Compare earlier allochroite n.

Mineralogy. Now rare.

= iolite n.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > cyclosilicates > [noun] > cordierite

water sapphire1698

dichroite1810

iolite1810

cordierite1814

peliom1820

saphir d'eau1820

weissite1836

indialite1954

1810 Jrnl. Nat. Philos. Nov. 231 (title) Description of the dichroït [Fr. dichroïte], a new species of mineral.

1831 D. Brewster Treat. Optics xxx. §148. 249 M. Cordier observed the same change of colour in a mineral called iolite, to which Haüy gave the name of dichroite.

1839 G. Bird Elements Nat. Philos. xxiv. 380 Similar phenomena are observed in the iolite or dichroite, and many other natural and artificial substances.

1875 J. W. Dawson Life's Dawn on Earth vi. 145 The gneiss..is chiefly grey and very silicious, containing dichroite, and..known as dichroite-gneiss.

1881 Sat. Rev. 23 Apr. 518/1 The great ball of dichroite which seems crystal white when looked at from one point of view, rich blue from another, and straw-colour from another.

1966 R. Webster Pract. Gemmol. (ed. 4) xx. 191 Alternative names for the species are Cordierite, Dichroite and the incorrect term ‘Water Sapphire’.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).

单词	dichroite
释义	dichroiten. Brit. /ˈdʌɪkrəʊʌɪt/, U.S. /ˈdaɪkroʊˌaɪt/ Forms: 1800s dichroit, 1800s dichroït, 1800s– dichroite. Origin: A borrowing from French. Etymon: French dichroïte. Etymology: < French dichroïte (L. Cordier 1809, in Journal des mines 25 129, following a suggestion from R. J. Haüy) < ancient Greek δίχρους (uncontracted δίχροος : see dichroous adj.) + French ite -ite suffix¹. Compare German Dichroit (1809). Compare earlier allochroite n. Mineralogy. Now rare. = iolite n. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > cyclosilicates > [noun] > cordierite water sapphire1698 dichroite1810 iolite1810 cordierite1814 peliom1820 saphir d'eau1820 weissite1836 indialite1954 1810 Jrnl. Nat. Philos. Nov. 231 (title) Description of the dichroït [Fr. dichroïte], a new species of mineral. 1831 D. Brewster Treat. Optics xxx. §148. 249 M. Cordier observed the same change of colour in a mineral called iolite, to which Haüy gave the name of dichroite. 1839 G. Bird Elements Nat. Philos. xxiv. 380 Similar phenomena are observed in the iolite or dichroite, and many other natural and artificial substances. 1875 J. W. Dawson Life's Dawn on Earth vi. 145 The gneiss..is chiefly grey and very silicious, containing dichroite, and..known as dichroite-gneiss. 1881 Sat. Rev. 23 Apr. 518/1 The great ball of dichroite which seems crystal white when looked at from one point of view, rich blue from another, and straw-colour from another. 1966 R. Webster Pract. Gemmol. (ed. 4) xx. 191 Alternative names for the species are Cordierite, Dichroite and the incorrect term ‘Water Sapphire’. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022). < n.1810
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