| 单词 |
quartzofeldspathic |
| 释义 |
ˌquartzofeldˈspathic, a. Petrol. Also -fels-. [f. quartz + -o + feldspathic, felspathic a.] Containing a high proportion of quartz and feldspar.
1839H. T. De la Beche Rep. Geol. Cornwall, Devon & W. Somerset vi. 175 It has chiefly a quartzo-felspathic base with crystals of felspar. 1973Nature 11 May 62/2 The oldest known rocks in the world are quartzofeldspathic gneisses (the Amîtsoq gneisses) from the Godthaab area of West Greenland. |

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