Cleveite

Cleveite is an impure radioactive variety of uraninite containing uranium and found in Norway. It has the composition UO₂ with about 10% of the uranium substituted by rare earth elements. It was named after Swedish chemist Per Teodor Cleve.

Cleveite was the first known terrestrial source of helium, which is created over time by alpha decay of the uranium and accumulates trapped (occluded) within the mineral. The first sample of helium was obtained by William Ramsay in 1895 when he treated a sample of the mineral with acid. Cleve and Abraham Langlet succeeded in isolating helium from cleveite at about the same time.

单词	cleveite
释义	cleveite /'kliːvaɪt/ 英汉-汉英词典 n. 钇铀矿词组 \| 习惯用语您要查找的是不是： clever adj. 聪明的；机灵的；熟练的 declivity n. 斜坡 Clifton 克利夫顿 cleveite n. [矿物] 钇铀矿网络短语: cleveite e 钇铀矿英语百科 Cleveite Cleveite is an impure radioactive variety of uraninite containing uranium and found in Norway. It has the composition UO₂ with about 10% of the uranium substituted by rare earth elements. It was named after Swedish chemist Per Teodor Cleve. Cleveite was the first known terrestrial source of helium, which is created over time by alpha decay of the uranium and accumulates trapped (occluded) within the mineral. The first sample of helium was obtained by William Ramsay in 1895 when he treated a sample of the mineral with acid. Cleve and Abraham Langlet succeeded in isolating helium from cleveite at about the same time.
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cleveite /'kliːvaɪt/

您要查找的是不是：

网络短语:

Cleveite