itabiriten.
/ɪˈtabɪrʌɪt/ Mineralogy.
A quartzose iron-slate or iron-mica slate, consisting chiefly of alternate layers of quartz and specular iron ore.
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the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > slate > others
alum slate1675
peach1778
itacolumite1863
itabirite1868
1868 J. D. Dana Syst. Mineral. (ed. 5) 141 Itabiryte is a schist resembling mica-schist, but containing much specular ore in grains or scales or in the micaceous form.
1880 Nature 26 Feb. 412/2 The disappearance of iron pyrites in auriferous itabirites.
This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).
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n.1868