单词 | chromite |
释义 | chromiten. Chemistry and Mineralogy. a. Chemistry. A compound of sesquioxide of chromium (Cr2O3) with the protoxide of another metal. Hence ΚΠ 1840 W. Henry Elem. Chem. II. 61 Dr. Thomson is disposed to consider it as a bichromite of iron. 1840 W. Henry Elem. Chem. II. 64 It appears to be doubtful whether any compounds exist that can properly be called chromites. 1879 H. Watts Dict. Chem. I. 950 Chromic oxide unites with protoxides, forming compounds of the form M″O.Cr.2O3 or M″Cr.2O4, which may be called chromites. The best known of these compounds is chrome-iron ore, in which, however, part of the chromium is usually replaced by aluminium and sometimes by iron. b. Mineralogy. Name for chrome iron ore n. at chrome n. Compounds. ΚΠ 1850 J. D. Dana Syst. Mineral. (ed. 3) 435 Chromite. This entry has not yet been fully updated (first published 1889; most recently modified version published online March 2022). < n.1840 |
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