‘Thunderstone’: applied by some early mineralogists to a meteorite or to meteoric iron; by others to belemnites, and to flint arrow-heads of…
单词 | θ6544 |
释义 | the world > the earth > minerals > types of mineral > native elements and alloys > [noun] > native iron (4) ceraunite1814 ‘Thunderstone’: applied by some early mineralogists to a meteorite or to meteoric iron; by others to belemnites, and to flint arrow-heads of… steel iron1839 (a) a native iron resembling steel; (b) iron suitable for converting into steel; (c) (see quot. 1883). taenite1868 Nickeliferous iron found in meteorites. Nife1909 Geology. Nickel-iron; spec. the earth's core or the material composing it. |
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