Also called sodalite. A mineral of the sodalite group that contains Na and Cl. Its chemical composition is Na 8 (Al 6 Si 6 O 24 )Cl 2 . It belongs to the cubic crystal system and is granular or lumpy. It can be colorless, white, pink, blue, gray, or yellow. It emits reddish fluorescence when exposed to ultraviolet light. Specific gravity 2.27-2.33, Mohs hardness 5.5-6. It becomes gel-like when treated with acid. It is found in sodium-rich plutonic rocks such as nephelinthene feldspar. The one from the nephelinthene feldspar of Bokjinsan, Pyeonggang County, Gangwon Province, South Korea, has a mixture of blue and white parts, and the beautiful ones are used as decoration stones. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
方ソーダ石ともいう。ソーダライト族のうちNaとClを含有する鉱物。化学成分はNa8(Al6Si6O24)Cl2。立方晶系に属し,粒状または塊状である。無色,白色,淡紅,青,灰,黄色など多種類の呈色を示す。紫外線を受け赤色系統の蛍光を発する。比重2.27~2.33,モース硬度5.5~6。酸による処理によりゲル状となる。ネフェリンセン長岩などNaに富む深成岩中に産出する。韓国江原道平康郡福辰山のネフェリンセン長岩から産出するものは青色を呈する部分と白色の部分が混在し美麗なものが装石として利用される。
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 |
<<: Collection of the works of Sotan
>>: Natrolite (English spelling)
Born August 25, 1958. Burbank, California. America...
…The central point of the upper edge of the exter...
〘Self-Ga 5 (4)〙 (In ancient times it was "saw...
...Yamawaki Toyo, a Kyoto government physician wh...
…In 1698 (Genroku 11), the Edo Shogunate ordered ...
...The past circumstances under which the current...
A rokyoku (traditional Japanese folk song) piece. ...
The psychopathology of apathy The German word &qu...
A bird of the order Accipitridae and family Accipi...
Born: October 27, 1883, Tokyo [Died] June 27, 1940...
A resort town in the eastern part of New York Stat...
A city in the southern Ishikari Plain, Hokkaido. I...
…However, on April 17-18, when the emperor asked ...
A collection of Chinese prose from the Tang dynas...
Climate factors affecting the climate of each regi...