A general term for naturally occurring carbonate minerals. Natron, which is composed mainly of sodium carbonate hydrate and sodium bicarbonate, and trona, which is composed of sodium sesquicarbonate, are found in Africa, North America, China, India, etc. Source: About Shogakukan Digital Daijisen Information | Legend |
天然に産する炭酸塩鉱物の総称。炭酸ナトリウムの水和物と炭酸水素ナトリウムを主成分とするナトロン、セスキ炭酸ナトリウムからなるトロナなど。アフリカ、北米、中国、インドなどで産出する。
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