陕西省紫阳县朱溪河钛磁铁矿地质特征

紫阳县朱溪河钛磁铁矿区分布着北西向碱基性岩脉群,钛磁铁矿体多产于规模大、分异好的辉绿岩体中部暗色相带内,与围岩呈渐变过渡关系,产状与含矿岩体产状基本一致。矿石自然类型为浸染状钛磁铁矿,矿石工业类型为需选弱磁钛磁铁矿石,矿床成因类型为岩浆晚期分异型。大比例尺磁法测量磁异常能较好的反映成矿信息。

GEOLOGY OF TITANOMAGNETITE DEPOSIT IN ZHUXIHE, ZIYANG COUNTY OF SHAANXI

Alkaline-basic dikes at NW are distributed in groups in the Zhuxihe titanomagnetite min- eralized area of Ziyang County, in which the titanomagnetite ore bodies mainly occur in dark-colored phase zones of large-scale and well-differentiated diabase bodies, demonstrating a relationship with wall rocks by gradient transitions and an attitude in general accord with ore-beating rock bodies. The nature type of ores is attributed to disseminated titanomagnetite ore and the industrial type to low intensity titanomagnetite separation. The genesis of the deposit belongs to late magmatie differentiation. Magnetic anomalies from magnetic survey at a large scale can reflect proper indicators of mineralization.