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单词 ripidolite
释义

ripidoliten.

Brit. /rᵻˈpɪdəlʌɪt/, U.S. /rəˈpɪdəˌlaɪt/
Origin: Either (i) a borrowing from French. Or (ii) a borrowing from German. Etymons: French ripidolite; German Ripidolith.
Etymology: < French ripidolite (1839 in a summary of Kobell's German paper) or its etymon German Ripidolith (F. von Kobell 1839, in Jrnl. f. prakt. Chem. 16 470) < ancient Greek ῥιπίδ- , ῥιπίς fan (see rhipidoglossate adj.) + German -o- -o- connective + -lith -lite comb. form1. N.E.D. (1909) gives the pronunciation as (rəipi·dǫ̆ləit) /raɪˈpɪdəlaɪt/.
Mineralogy.
A mineral of the chlorite group with fan-like crystals, now regarded as a ferroan variety of clinochlore.Chemical formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8.
ΘΚΠ
the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > chlorite > clinoclore
leuchtenbergite1844
ripidolite1844
clinochlore1851
kochubeïte1868
pycnochlorite1903
sheridanite1912
1844 J. D. Dana Syst. Mineral. (ed. 2) vi. 317 Kobell's [analysis] separates the last two, together with a chlorite from Zillerthal, under the name Ripidolite.
1880 Libr. Universal Knowl. XIII. 155 [Sapphire] is found..in granular limestone in New Jersey, and in the ripidolite of North Carolina.
1990 Jrnl. Petrol. 31 1290 Aggregates of fine-grained tabular brown biotite, chlorite (ripidolite), and epidote..are present.
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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n.1844
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