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单词 manganosiderite
释义

manganosideriten.

Brit. /ˌmaŋɡənəʊˈsɪdərʌɪt/, U.S. /ˈˌmæŋɡənoʊˈˌsɪdəˌraɪt/
Origin: A borrowing from German. Etymon: German Manganosiderit.
Etymology: < German Manganosiderit (C. Bayer 1873, in Verhandl. des Naturforsch. Vereines Brünn 12 ii. 20) < Mangano- (see mangano- comb. form1) + Siderit siderite n.1
Mineralogy.
A variety of rhodochrosite containing approximately equal amounts of MnCO3 and FeCO3.
ΚΠ
1884 E. S. Dana Dana's Syst. Mineral. (ed. 5) App. III. 103 A variety of rhodochrosite has been called Manganosiderite by Bayer.
1950 Thorpe's Dict. Appl. Chem. (ed. 4) X. 539/2 With increasing iron it [sc. rhodochrosite] passes to manganosiderite.
1992 W. A. Deer et al. Introd. Rock-forming Minerals (ed. 2) 636 A variety of rhodochrosite containing up to 20 per cent FeCO3 has been called ponite, the term manganosiderite being used when Mn ∼ Fe.
This entry has been updated (OED Third Edition, September 2000; most recently modified version published online March 2022).
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