| 栾长青,唐益群,云正文.马鞍桥金矿床地质-地球化学特征及成因探讨[J].地质找矿论丛,2007,(3):190-194 |
| 马鞍桥金矿床地质-地球化学特征及成因探讨 |
| GEOLOGICAL-GEOCHEMICAL CHARACTERISTICS AND GENESIS OF MA’ANQIAO GOLD DEPOSIT |
| 投稿时间：2007-04-10 修订日期：2007-07-05 |
| DOI：10.6053/j.issn.1001-1412.2007.3. 005 |
| 中文关键词: 马鞍桥金矿 地质-地球化学特征 矿床成因 陕西省 |
| 英文关键词:Ma’anqiao gold deposit geological-geochemical characteristics genesis Shaanxi province |
| 基金项目:中国地质调查局项目(20031600026)资助 |
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| 中文摘要: |
| 马鞍桥金矿床具有明显的层控特点,矿化范围大、形态较规则、工业矿体分布较局限,矿石品位较低,金矿床受区域性大断裂一侧的脆-韧性剪切带控制,金矿化产于剪切带中较低序次脆性破裂面中,深部含矿热流体主要是同生水、大气降水和少量岩浆水,多数金属硫化物的形成具有多期性,而金的成矿主要为一期,二者不具明显的相关关系。马鞍桥金矿为受脆-韧性剪切带控制的微细浸染型金矿,成因上属于多来源地下热水渗滤型金矿。 |
| 英文摘要: |
| Ma’anqiao gold deposit is characteristic of stratabound,large area mineralization,regular ore bodies and low grade.The deposit is controlled by brittle-ductile shear zone in one side of a deep regional fault.Gold mineralization occurs at the low order brittle fractural plane in the shear zone.The deep heat ore fluid is composed of cognate water,meteoroid water, and a small amount of magmatic water.Sulfides are formed in multiple stages but gold is mainly deposited in one stage showing no obvious correlation.It is a brittle-ductile shear zone-controlled infiltrated micro-disseminated gold ore deposit with multiple sources of fluid. |
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