单词 | mimophyre |
释义 | mimophyren. Geology. rare. A type of uncrystallized rock with coarse grains of feldspar, resembling a porphyry. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > mineral or chemical composition > [noun] > rock containing specific mineral alum rockc1637 silver-spat1668 salt-rock1670 tin-spar1681 garnet-rock1794 mimophyre1824 crystalline1856 haüynophyr1865 minette1866 phosphate rock1869 1824 H. T. De la Beche tr. A. Brongniart Table Classif. Mixed Rocks in Sel. Geol. Mem. p. xx Genus 2. The imbedded rocks. Fragments enveloped in a very distinct paste. Species 1. Mimophyre. (Some greywackes.) An argillaceous cement uniting very distinct grains of felspar, and sometimes of quartz, clayslate, &c. 1841 Penny Cycl. XX. 56/2 Mimophyre. Cement argillaceous, uniting distinct grains of felspar, &c. 1884 Science 13 June 728/2 The mimophyres are found associated with the sedimentary schists, quartzites, and phyllites, and belong to the Cambrian, Silurian, and Permian. 1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) 286 Mimophyre, hornfels with coarse feldspar. 1983 S. I. Tomkeieff et al. Dict. Petrol. 366/2 Mimophyre, a term for agglomerate, volcanic ash, tuff. This entry has been updated (OED Third Edition, March 2002; most recently modified version published online March 2022). < |
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