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单词 richterite
释义

richteriten.

Brit. /ˈrɪktərʌɪt/, U.S. /ˈrɪktəˌraɪt/
Origin: From a proper name, combined with an English element; modelled on a German lexical item. Etymons: proper name Richter , -ite suffix1.
Etymology: < the name of H. Theodor Richter (1824–98), German metallurgical chemist + -ite suffix1, after German Richterit (A. Breithaupt 1865, in Berg- u. Hüttenmännische Zeitung 24 364).
Mineralogy.
A ferromagnesian mineral of the amphibole group, occurring as elongated brown, yellow, red, or green crystals.Richterite is a silicate of sodium, calcium, magnesium, and (usually) iron( ii), Na2Ca(Mg,Fe)5Si8O22(OH)2; it was formerly thought to contain manganese. Crystal system: monoclinic.
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the world > the earth > minerals > types of mineral > silicates > amphibole (double chain) > [noun] > other
uralite1835
gamsigradite1862
palygorskite1868
richterite1868
barkevikite1892
xiphonite1899
narsarsukite1900
winchite1906
juddite1908
imerinite1913
tirodite1938
1868 J. D. Dana Syst. Mineral. (ed. 5) 215 The Richterite of Breith[aupt]..is near schefferite in composition.
1905 W. H. Weed tr. R. Beck Nature of Ore Deposits ii. 105 The strata are arranged in the following manner from above downward... 7. Thin layer of skarn (schefferite, richterite, tephroite and rhodonite).
1965 E. W. Heinrich Microsc. Identification of Minerals x. 273 Richterite,..a rare manganiferous amphibole, is closely allied to soda tremolite.
2000 W. D. Nesse Introd. Mineral. xiv. 289/1 It is likely that some materially conventionally identified as tremolite is actually richterite.
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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n.1868
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