pitchblende

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

Related topics: Earth sciences

pitch·blende /ˈpɪtʃblend/ noun [uncountable]  HEa dark shiny substance dug from the earth, from which uranium and radium are obtained 沥青铀矿

Examples from the Corpus

pitchblende• The cliff contains pitchblende veins that have been sources of dissolved uranium.• Veins of pitchblende in the cliff are the source of uranium in the flat floodplain deposits at the foot of the cliff.

pitch·blende nounChineseSyllable  

the a dark Corpus substance shiny from dug

pitchblende
pitch‧blende /ˈpɪtʃblend/ noun [uncountable]
a dark shiny substance dug from the earth, from which uranium and radium are obtained