单词	ironstone
释义	ironstone /ˈʌɪənstəʊn / noun [mass noun] 1Sedimentary rock containing a substantial proportion of iron compounds.It is important to note that iron oxides in the ironstones and associated rocks are derived from the weathering of sulphides, mainly pyrite, that occur in less weathered rocks or in the subsurface.... The ironstones are not sedimentary banded iron formation but formed as a consequence of silicification and sulphide mineralization along shear zones. In general terms, the sequences have a relatively simple transgressive-regressive pattern around a mid-cycle condensed interval represented by shellbeds, sideritic micritic limestones or ironstones. 2 [usually as modifier] A kind of dense, opaque stoneware.For those who would visualize Adobe Walls as a hardscrabble place, it should be noted that the restaurant run by Mrs. Olds served its food on imported white English ironstone dishes.
随便看	separable separableness separably separate separate but equal separately separateness separate (or sort out) the men from the boys separate (or sort) the wheat from the chaff separate school separate the men from the boys pectineal pectinesterase pectineus pectinibranch pectinic acid pectinid pectiniform pectinirhomb pectinmethylesterase pectinoid pectinolytic pectinous pectolite pectolytic

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