| 单词 | potassium feldspar |
| 释义 | > as lemmaspotassium feldspar potassium feldspar n. Mineralogy a feldspar rich in potassium; spec. each of the three minerals orthoclase, microcline, and sanidine, which have the formula KAlSi3O8; these minerals collectively. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > orthoclase orthose1814 orthoclase1831 potash feldspar1845 potassium feldspar1894 1894 Science 9 Feb. 79/2 A still more interesting change was the injection of potash and potassium feldspar into diorite, and a similar transference of the corresponding sodium salts into granite. 1938 Times 27 June 16/1 A fine set of unusual twin crystals of orthoclase (potassium feldspar). 1994 Museum Internat. No. 183. 27/2 This statue is of porphyroid granite with pink potassium feldspar phenocrysts, a rock commonly used in Ancient Egyptian statuary. < as lemmas |
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