The Mahour base metal deposit is located northeast of Badroud in the middle of the Urumieh–Dokhtar magmatic arc in the Isfahan province of Iran. The main host rocks to the ores are Eocene volcanic and volcaniclastic rocks. Hypogene ore minerals constituting the main ore body are galena, sphalerite, pyrite, and chalcopyrite. In addition to gangue quartz, a variety of supergene minerals comprising gypsum, goethite, hematite, “limonite”, malachite, azurite, covellite, and chalcocite are also present; gangue minerals are quartz, barite, calcite, sericite, and chlorite. Silicification, intermediate argillic, and propylitic are the main wall-rock alteration types. The presence of fluid inclusions with different vapor/liquid ratios in quartz and sphalerite could indicate a boiling process. The primary liquid-rich fluid inclusions suggest that the homogenization temperature was between 107 and 298 °C from fluids with salinities from 1.5 to 13.7 wt.% NaCl equiv. These data suggest that the ore-forming fluids were magmatic with a contribution from meteoric waters. The δ34S values of sulfides range from 1.9 to 3.4‰, those of barite range from 12.1 to 13.2‰, and those of gypsum range from 4.3 to 5.6‰. These data suggest that sulfur was mostly of magmatic origin with a minor contribution from sedimentary rocks. Our data suggest that the boiling of fluids formed an intermediate-sulfidation style of epithermal mineralization for the Mahour deposit.

中文翻译：

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伊朗马胡尔贱金属矿床的成因：流体包裹体和硫同位素的限制

马胡尔贱金属矿床位于伊朗伊斯法罕省乌鲁米耶-多赫塔尔岩浆弧中部巴德鲁德东北部。矿石的主要赋矿岩为始新世火山岩和火山碎屑岩。构成主矿体的次生矿石矿物有方铅矿、闪锌矿、黄铁矿、黄铜矿等。除脉石石英外，还存在多种表生矿物，包括石膏、针铁矿、赤铁矿、“褐铁矿”、孔雀石、蓝铜矿、蓝铜矿和辉铜矿；脉石矿物有石英、重晶石、方解石、绢云母、绿泥石等。硅化、中泥质、青盘岩是主要的围岩蚀变类型。石英和闪锌矿中存在不同汽/液比的流体包裹体可能表明存在沸腾过程。主要富含液体的流体包裹体表明，盐度为 1.5 至 13.7 wt.% NaCl 当量的流体的均化温度在 107 至 298 °C 之间。这些数据表明，成矿流体是岩浆，其中有大气水的贡献。硫化物的δ34S值为1.9～3.4‰，重晶石的δ34S值为12.1～13.2‰，石膏的δ34S值为4.3～5.6‰。这些数据表明，硫主要来自岩浆，少量来自沉积岩。我们的数据表明，流体的沸腾形成了马乌尔矿床的中硫化型浅成热液矿化。