单词 | richellite |
释义 | richelliten. Mineralogy. An amorphous iron-rich mineral occurring as reddish- or yellowish-brown masses in phosphatic sedimentary rocks. Richellite is a hydrated phosphate and hydroxide of calcium and iron( iii) with fluorine, Ca3Fe3+10[(OH, F)3| (PO4)2]4. Crystal system: amorphous or (on heating) tetragonal. ΘΚΠ the world > the earth > minerals > types of mineral > phosphates > [noun] > calcium or iron phosphates richellite1883 xanthoxenite1920 1883 Amer. Jrnl. Sci. 125 411 MM. G. Cesaro and G. Despret have given the name richellite to a supposed new mineral from Richelle in the neighborhood of Visé, Belgium. 1935 J. W. Mellor Comprehensive Treat. Inorg. & Theoret. Chem. 14 lxvi. 412 G. Cesaro and G. Desprez [sic] described a mineral from Richelle, Belgium, which they called richellite. The analysis corresponds with calcium ferric fluophosphate, although G. Cesaro gave 8Fe(PO4).Fe2OF2.(OH)2.36H2O for the formula. 1963 Amer. Mineralogist 48 300 Richellite, a calcium-iron hydrated phosphate, appears to be virtually amorphous. 1999 Rocks & Minerals (Nexis) 1 Nov. 370 Gold Quarry mine: burangaite, carbonate-cyanotrichite, corderoite.., richellite. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1883 |
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