The La′erma gold ore belt, in the south subzone of western Qinling,include La′erma and Qiongmo ore deposits and Yaxiang ore occurrence.These stratabound gold deposits are closely associated with submarine exhalative sedimentation and possess many unique features. The gold deposits in the Cambrian silicalite formation composed of black chert and slate are so clearly confined by strata, host rock types and structures that their stratabound character is well accepted. The hydrothermal minerals such as quartz...
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