... They are colored red (iron, Fe2O3 ), green (chromium , Cr2O3 ), blue (iron cyanide), cobalt blue (cobalt, CoO), yellow (chromic acid), black (carbon), etc., but because they are made of the same inorganic pigments as natural components, they are stable and permanent, and are treated as being exactly the same in value as natural stones. There are also agates with various names, such as moss agate, which contains chlorite and manganese oxide minerals and shows a moss-like or vegetative pattern. [Chikayama Akira] *Some of the terminology that mentions "moss agate" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…赤色(鉄,Fe2O3),緑色(クロム,Cr2O3),青色(シアン鉄),コバルト青色(コバルト,CoO),黄色(クロム酸),黒色(炭素)などに着色されているが,天然成分と同じ無機顔料なので,安定していて永久性があるため,価値的には天然石とまったく同一に取り扱われる。その他,クロライトchlorite(緑泥石)や酸化マンガンの鉱物が内包されて苔状もしくは草木状模様を示すモス・アゲートmoss agate(苔メノウ)など各種の名称のアゲートがある。【近山 晶】 ※「moss agate」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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