另一种以铁闪锌矿为标志，矿体呈似层状、脉状及不规则状等，靠近岩体接触带或断裂与赋矿层的交汇部位产出，代表了成矿第二世代。
Marmatite is the guide mineral of the second ore type which appears in bedded, veined and irregular ore bodies near contact zone of magmatic rock or joint positions between faults and ore beds.
擦痕是从事断裂多期活动特征研究中较直观、实用的标志之一。
The scratch is one of the better marks to reveal the characteristics of repeated movements of faults.
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