陕西省商洛市丹凤北部晶质石墨成矿规律及资源远景预测

Crystalline graphite mineralization and resource prospect in the northern Danfeng of Shangluo city,Shaanxi Province

陕西省丹凤北部晶质石墨矿位于北秦岭复合岛弧杂岩带东部,区内构造、岩浆、变质活动强烈,发育大量晶质石墨矿,具有良好的成矿地质背景和较大找矿潜力,区内石墨矿以区域变质型晶质石墨矿床为主,主要赋矿层位为古元古界秦岭群雁岭沟组和中元古界峡河岩群寨根岩组,通过典型矿床地质特征、矿体特征研究,探讨成矿规律,并开展资源远景预测,圈出3个成矿远景区,预测晶质石墨资源潜力1500万吨。

The crystalline graphite mine in northern Danfeng of Shaanxi Province is located in the east of the north Qinling complex island arc complex zone where extensive structures,magma and metamorphic activities exist,containing a large number of crystalline graphite mine and having a good metallogenic background and great prospecting potential.The graphite mine in the area is mainly regional metamorphic crystalline graphite deposit,and the main ore-bearing strata are Yanlinggou Formation of Paleoproterozoic Qinling group and Zhaigen Formation of Middle Proterozoic Xiaheyan Group.Based on the study of the geological features and ore body characteristics of typical deposits,the metallogenic regularity is discussed,the resource prospect prediction is carried out,three metallogenic prospect areas are delineated and the resource potential of crystalline graphite is forecasted to be 15 million tons.