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单词 rhomboclase
释义

rhomboclasen.

Brit. /ˈrɒmbəkleɪz/, /ˈrɒmbəkleɪs/, U.S. /ˈrɑmbəˌkleɪs/, /ˈrɑmbəˌkleɪz/
Origin: Formed within English, by compounding; modelled on a Hungarian lexical item. Etymons: rhombo- comb. form, -clase comb. form.
Etymology: < rhombo- comb. form + -clase comb. form, after Hungarian rhomboklas (J. S. Krenner 1891, in Magyar tudományos Akad. Értes. 2 96).
Mineralogy.
An iron sulphate mineral occurring as colourless or pale yellow, green, or blue tabular crystals, commonly as an oxidation product of pyrite.Rhomboclase is a hydrated acid sulphate of iron( iii), HFe(SO4)2·4H2O. Crystal system: orthorhombic.
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rhomboclase1910
1910 Mineral. Mag. 15 429 Rhomboclase..occurring together with szomolnokite..and other iron sulphates (kornelite, copiapite, coquimbite, &c.) at Szomolnok, Hungary.
1968 I. Kostov Mineral. 499 Rhomboclase is orthorhombic-dipyramidal, occurring as colourless to white or greenish thin tabular crystals with perfect {001} cleavage.
2000 Environmental Sci. & Technol. 34 257/1 Sample 90WA110C precipitated rhomboclase upon cooling.
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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n.1910
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