...In group IIA, the beryllium mineral is beryl Be 3 Al 2 Si 6 O 18. In group IIIA, the rare earth element minerals are monazite CePO 4 (Ce is a light rare earth element), xenotime YPO 4 (Y is yttrium and a heavy rare earth element), actinide element minerals are thorite ThSiO 4 and uraninite UO 2. In group IVA, the zirconium and hafnium minerals are zircon ZrSiO 4 and hafnon HfSiO 4. ... *Some of the terminology explanations that mention "thorite" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…IIA族ではベリリウムの鉱物で緑柱石Be3Al2Si6O18等。IIIA族では希土類元素の鉱物でモナザイトCePO4(Ceは軽希土類元素),ゼノタイムYPO4(Yはイットリウムおよび重希土類元素),アクチノイド元素の鉱物でトール石thorite ThSiO4,センウラン鉱UO2等。IVA族ではジルコニウム,ハフニウムの鉱物でジルコンZrSiO4,ハフノンhafnon HfSiO4等。… ※「thorite」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
>>: Thorea gaudichaudii (English spelling) Thoreagaudichaudii
Around 1285 - 1348 Igarashi was a manuscript illus...
…Rusts are found on a wide variety of plants, but...
…On the other hand, he collected vernacular and L...
...Author unknown. This is a summary of the anti-...
The part where the scion is joined in grafting. Gr...
…Doline comes from the Serbian word dolina, which...
…a famous philosopher of Jewish and Greek traditi...
...On the other hand, Andersen's fairy tale &...
It is an old town located in the southeastern part...
A general term for birds of the passerine order Py...
→Kanazawa Plain Source : Heibonsha Encyclopedia Ab...
These are plants, animals, and agricultural waste ...
A floating perennial plant of the family Hormonac...
(Kahara Town, Tagawa District, Fukuoka Prefecture)...
...An experiment in Nevada, USA (1962) reported t...