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The Beiya gold–polymetallic deposit is one of the largest gold deposits in China and is considered to be a typical porphyry-skarn system located in the middle of the Jinshajiang–Ailaoshan alkaline porphyry metallogenic belt. Massive magnetite is widespread in the Beiya ore district but its genesis is still the subject of debate. Five representative magnetite types are present in the Beiya deposit,...
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