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单词 rhombic quartz
释义

> as lemmas

rhombic quartz
rhombic quartz n. Obsolete feldspar.
ΚΠ
1770 E. M. da Costa in G. von Engeström & E. M. da Costa tr. A. F. Cronstedt Ess. Syst. Mineral. 72 (note) The Germans and other nations call this substance Feld-spat, that is feild or vague spar; a name very inadequate to its nature, as it touches no wise on the sparry class. I have therefore, in my Lectures, given it the English name of Rhombic Quartz.
1817 J. Sutcliffe Short Introd. Study Geol. 39 They differ widely in colour and character, according to the rhombic quartz, the feldspar..&c. which, in different places, enter into their composition.
extracted from rhombicadj.n.
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