(in Staffordshire) ironstone found as fossiliferous nodules; cf. ballstone n.
| 单词 | θ6401 |
| 释义 | the world > the earth > minerals > ore > [noun] > metal ore > iron ore > specific shape (4) ball-mine1702 (in Staffordshire) ironstone found as fossiliferous nodules; cf. ballstone n. pipe ore1709 ore occurring in or as pipes (senses 18a, 18d). ball veina1728 a stratum of iron ore containing nodules, formerly mined in Sussex. kidney ore1750 hæmatite occurring in kidney-shaped masses. |
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