uraninite中文什么意思

n.
【矿物】晶质铀矿，沥青铀矿;天然氧化铀。

• thorian uraninite:    钍晶质铀矿
• uraninite group:    沥青铀矿族

例句与用法

1. Ore minerals in the colorado-type deposits are of uraninite and coffinite, with associated vanadium and copper minerals .
   科罗拉多型矿床中的铀矿物为晶质铀矿和水硅铀矿，与之共生的还有钒，铜矿物。
2. In the older rocks below these glacial deposits are detrital uraninite and pyrite , two minerals considered evidence for very low levels of atmospheric oxygen
   这些冰河沉积物下方的较老岩层，是沥青铀矿与黄铁矿碎屑；这两种矿物被认定为大气中氧气极为稀少的证据。

英文释义

名词

1. a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore
   同义词：pitchblende