pyrochlore
|
...Orthorhombic crystal system, specific gravity 8) occurs in solid solution series in granite pegmatites and alluvial deposits, and is an important ore of tantalum and niobium. In addition to niobium, pyrochlore (Na,Ca) 2 Nb 2 O 6 (OH,F) in carbonate rocks is also an important ore mineral. The main producers of tantalum are Brazil, Canada, and Thailand, and of niobium are Brazil and Canada. ... *Some of the terminology that mentions "pyrochlore" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
|
…斜方晶系，比重8)は固溶体系列をつくって花コウ岩ペグマタイトおよび漂砂鉱床に産し，タンタルとニオブの重要な鉱石である。ニオブはこのほか炭酸塩岩中のパイロクロアpyrochlore (Na,Ca)2Nb2O6(OH,F)が重要な鉱石鉱物である。タンタルはブラジル，カナダ，タイが，ニオブはブラジル，カナダが主要産出国である。… ※「pyrochlore」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 |
Recommend
Stock market - Kabushikishijo (English spelling) stock market
A market where stocks are issued and circulated. ...
sauce soubise (English spelling) saucesoubise
…It is used in cream stews, gratins, cream croque...
Wood sorrel - Wood sorrel
…It has bright yellow flowers and double-flowered...
Sorghum wine (Kaoliang liquor) - Sorghum wine
A Chinese distilled liquor made primarily from sor...
Katsura man
〘Noun〙① (from "Katsura (Katsura)②") A le...
Mayor of the Palace - Major Domus (Latin)
The highest court position in the Merovingian dyn...
Song and Play - Kashigi
A theatrical form based on Taiwanese folk songs, i...
Saintsbury
He was a British literary critic and professor at ...
Underwater tunnel - Suteitonneru
A tunnel built underwater, such as a river, canal,...
Acetobacter aceti (English name) Acetobacteraceti
…[Tsubaki Keisuke]. . . *Some of the terminology ...
Ophthalmoscope
…Until fundus examination became possible, diseas...
History of the English Church
…As a result of the famous debate at the Council ...
childhood schizophrenia
…E. Minkowski, in particular, developed the idea ...
Barentsz, W.
…He also wrote a book about the West Indies toget...
Stork - Stork
A general term for birds in the family Ciconidae i...