| 单词 | polymignyte | 
| 释义 | polymignyte [´päl·i`mig´nīt]  MINERALOGY (Ca,Fe,Y,Zr,Th)(Nb,Ti,Ta)O4 A black mineral composed of niobate, titanate, and tantalate of cerium-group metals, with calcium and iron. Also spelled polymignite.  | 
	
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