The results showed that the main crystalline iron oxide minerals in the clay of red earth was goethite and hematite, but only goethite was detected in the clay of yellow soil.
结果表明，黄壤与红壤粘粒中氧化铁矿物组成主要差别在于红壤既含针铁矿又含赤铁矿，而黄壤只含针铁矿。
Iron oxide pigment is a color pigment whose basic substance is the oxide of iron, such as red oxide, yellow iron oxide, black iron oxide, and brown oxide.
氧化铁颜料主要指基本物质为铁的氧化物的着色颜料，如氧化铁红、铁黑、铁黄、铁棕等。
Abstract: in this paper, the preparation of iron oxide yellow and iron oxide red with pyrite cinder was studied.
文摘：对利用硫铁矿烧渣制备氧化铁黄和氧化铁红进行了研究。
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