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Oroide is an alloy of the metals copper and zinc, or copper and tin, often employed inexpensively for decorative purposes where a gold-colored metal is desirable. Oroide may refer to: * Brass, an alloy of copper and zinc that has a bright gold-like appearance * Bronze, an alloy of copper and (in modern times) tin * Other gold-colored copper alloys == See also == * Iron pyrite, a non-oroide mineral sometimes referred to as "fool's gold" 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Oroide」の詳細全文を読む スポンサード リンク
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