ironstone

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i·ron·stone

 (ī′ərn-stōn′)
n.
1. A hard white pottery.
2. A rock containing enough iron to permit commercial extraction; an iron ore.

ironstone

(ˈaɪənˌstəʊn)
n
1. (Geological Science) any rock consisting mainly of an iron-bearing ore
2. (Ceramics) Also called: ironstone china a tough durable earthenware

i•ron•stone

(ˈaɪ ərnˌstoʊn)

n.
1. any iron-bearing mineral or rock with siliceous impurities.
2. Also called i′ronstone chi′na. a hard white stoneware.
[1515–25]

ironstone

Hard, white pottery introduced by C J Mason in the nineteenth century.
Translations

ironstone

[ˈaɪənˌstəʊn] N (= china) → porcelana f resistente

ironstone

[ˈaɪənstəʊn] nminerale m di ferro
References in classic literature ?
In Cypher's she belonged--in the bacon smoke, the cabbage perfume, the grand, Wagnerian chorus of hurled ironstone china and rattling casters.
Such fragmentation and the ensuing dispersion of gravels on the landscape are a further complication in the study of ironstones, arguably one of the least understood issues in soil science.
For instance, the international literature records terms such as laterite, petroferric contact, ferricrete, cuirasse, duricrusts, iron crusts, ironstones, ironpans, pisoliths, pisoplinthite, iron concretions and nodules.
Ironstone, in conjunction with HATCH, has developed an enhanced direct reduced iron and segregation technology, originally developed on a lab scale by the Alberta Research Council, for beneficiating ubiquitous oolitic ironstones into iron metallics and extracting by-products such as vanadium pentoxide and other economic minerals.
The anomaly is underlain by banded ironstones, schists with alteration similar to that within the Bambari Permits suggesting that the belt is of Archaean age.
Overlying the ironstone on the flanks of the fold are highly weathered saprolitic clays, poorly developed ironstones and cherts.
Between 1993 and 1953, Devco carried out a major evaluation of the soft lateritic ironstones, driving eleven adits in the three main bodies of ironstone and cutting many trenches and pits.