...For example, halotrichite Fe II SO 4 ・Al 2 (SO 4 ) 3 ・22H 2 O is a monoclinic mineral that is formed when hydrothermal solutions containing sulfuric acid react with igneous rocks. Pickeringite MgSO 4 ・Al 2 (SO 4 ) 3 ・22H 2 O is also a monoclinic mineral that is formed when rocks are attacked by sulfuric acid. Other double salts with a non-1:1 ratio of M II SO 4 to Al 2 (SO 4 ) 3 are also known for Cu II and Mn II . ... *Some of the terminology that mentions "pickeringite" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…たとえば鉄ミョウバン(halotrichite)FeIISO4・Al2(SO4)3・22H2Oは,硫酸を含む熱水溶液が火成岩に作用して生ずる単斜晶系の鉱物である。また苦土ミョウバン(pickeringite)MgSO4・Al2(SO4)3・22H2Oは単斜晶系の鉱物で,やはり岩石が硫酸に侵された場合にみられる。そのほかMIISO4とAl2(SO4)3との比が1対1でない複塩は,CuII,MnIIについても知られている。… ※「pickeringite」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 |
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