Studies on the Hydrated Iron Oxides. II : Hydrated Ferric Oxide Minerals Altered from Pyrrhotite by Weathering

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概要

• 論文の詳細を見る

• Some varieties of hydrated ferric oxides altered from pure Japanese pyrrhotite consist chiefly of goethite, rarely containing hydrous hematite and amorphous hydrated ferric oxides. There are several kinds of goethite differing in crystallinity ; the less the H_2O(+) content and the higher the dehydration temperature of combined water, the higher the crystallinity. It is not rare to find more than two varieties of goethite of different crystallinity coexisting in one ore specimen. The oxidation process of pyrrhotite can be expressed by the following schema : Pyrrhotite→Pyrite Marcasite→Iron sulfates→Goethite〓Hydrous hematite But, under some specific oxidation environments, pyrite, marcasite, and iron sulfates may not be formed.

• 東北大学の論文
• 1957-00-00

著者

• Nambu Matsuo

  The Research Institute Of Mineral Dressing And Metallurgy

関連論文

• Secondary Enrichment and Microscopic Intergrowth of Copper Ores from the Akayama Mine, Yamagata Prefecture, Japan
• Studies on the Hydrated Iron Oxides. IV : Iron Oxide Minerals Altered from Magnetite by Weathering
• Studies on the Hydrated Iron Oxides. II : Hydrated Ferric Oxide Minerals Altered from Pyrrhotite by Weathering

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