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单词 akrochordite
释义

akrochorditen.

Brit. /ˌakrə(ʊ)ˈkɔːdʌɪt/, U.S. /ˌækrəˈkɔrdaɪt/
Forms: 1900s– acrochordite, 1900s– akrochordite.
Origin: A borrowing from Greek, combined with an English element; modelled on a Swedish lexical item. Etymons: Greek ἀκροχορδών , -ite suffix1.
Etymology: < ancient Greek ἀκροχορδών acrochordon n. + -ite suffix1, after Swedish akrochordit (G. Flink 1922, in the article cited in quot. 1922, which is from the English summary), with allusion to the ‘wartlike’ spherical aggregates of the mineral.
Mineralogy.
A rare reddish-brown mineral typically found as small spherical aggregates in association with manganese ore.Akrochordite is a hydrated basic arsenate of manganese and magnesium, Mn4Mg(AsO4)2(OH)4·4H2O. Crystal system: monoclinic.
ΘΚΠ
the world > the earth > minerals > types of mineral > arsenates > [noun] > others of two elements
roselite1824
hedyphane1832
svabite1893
akrochordite1922
stranskiite1960
1922 G. Flink in Geol. Föreningens i Stockholm Förhandl. 44 776 Akrochordite,..the individual grouped in wartlike aggregations. Found in..Långban mines.
1955 M. H. Hey Index Mineral Species (ed. 2) 255 Akrochordite. Mn4Mg(AsO4)2(OH)4·5H2O... Syn. Acrochordite.
2008 Amer. Mineralogist 93 506/1 Results of the crystal structural analyses in the present study indicate that the M3 site in akrochordite should be occupied solely (or at least preferably) by Mg2+.
This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).
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n.1922
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