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单词 tautolite
释义

tautoliten.

Brit. /ˈtɔːtəlʌɪt/, U.S. /ˈtɔdəˌlaɪt/, /ˈtɑdəˌlaɪt/
Origin: A borrowing from German. Etymon: German Tautolith.
Etymology: < German Tautolith (A. Breithaupt 1827, in Jrnl. f. Chemie u. Physik 50 321), shortened < Tautometrolith (1827 in the same source; < Byzantine Greek ταὐτόμετρος of the same measure, referring to a supposed axial relation ( < ancient Greek ταὐτο- tauto- comb. form + -μετρος : see -metry comb. form) + German -lith -lite comb. form1), with remodelling of the ending after -lite comb. form1. Compare French tautolite (1829 or earlier; < German).
Mineralogy. Now disused.
= allanite n.
ΘΚΠ
the world > the earth > minerals > types of mineral > silicates > epidote group > [noun] > allanite
allanite1810
orthite1817
bucklandite1824
tautolite1828
xanthorthite1868
pumpellyite1925
1828 Philos. Mag. 2nd Ser. 3 398 The tautolite seems to be related to the chrysolite, as the ceylanite to the spinelle.
1868 J. D. Dana Syst. Mineral. (ed. 5) 286 Bucklandite is anhydrous allanite in small black crystals... Tautolite..is probably the same species.
1915 S. I. Levy Rare Earths ii. 42 The Tautolite of Kokscharow (1847), the Bodenite of Breithaupt (1844)..and the Vasite of Bahr (1863) have all been shown to be varieties of the same bewildering mineral.
This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).
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n.1828
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