† ferriliten.
Geology. Obsolete.
In the terminology of R. Kirwan: = Rowley rag n.
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ferrilite1794
1794 R. Kirwan Elements Mineral. (ed. 2) I. 230 Here we may observe, 1st, that it contains no calx; 2d, that it contains less iron than argill; and, 3d, that the iron is in a calciform state. In these respects then it [sc. Rowley ragg] differs from many traps, and from basalts; hence I call it ferrilite.
1804 Philos. Trans. (Royal Soc.) 94 281 Mr. Kirwan states the specific gravity of rowley rag, which he calls ferrilite, at 2.748.
1811 J. Farey Gen. View Agric. Derbyshire I. 278 In these soft Clays, masses of Basalt, Ferrilite, and others of the hardest stones of this class occur.
This entry has been updated (OED Third Edition, June 2014; most recently modified version published online June 2022).
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