The Poboya Prospect lies along the North Northwest ‐ South Southeast Palu‐Koro Fault Zone in the central part of the West Sulawesi Arc. The geology of the area consists of the Palu Metamorphic Complex overlain by the Paleogene‐Neogene Tinombo Formation of volcanosedimentary rocks, the Celebes Molasse sediment, and Late Cenozoic granitic rocks. Petrography, scanning electron microscope with energy‐dispersive spectrometry (SEM‐EDS), electron probe microanalyzer (EPMA), and fluid inclusion microthermometry were carried out to examine vein textures, ore mineralogy, and characteristics of the ore‐forming fluid responsible for mineralization in the River Reef Zone, the Poboya Prospect. Textures of quartz‐carbonate veins in the River Reef Zone include massive micro‐comb, moss, colloform, crustiform, mosaic, feathery, flamboyant, lattice bladed, ghost bladed, parallel bladed, and saccharoidal textures representing primary growth, recrystallization, and replacement. The homogenization temperature and fluid salinity are 240–250°C and 0.3–0.7 wt% NaCl eq., respectively. Ore minerals precipitated in the early stage consist of electrum, naumannite‐aguilarite, chalcopyrite, pyrite, marcasite, sphalerite, and pyrrhotite. Apart from pyrrhotite, these ore minerals were also precipitated in the late stage along with selenopolybasite, freibergite, argyrodite, pyrargyrite, and galena. Selenium more preferably occurs as the crystallographic replacement of sulfur in naumannite‐aguilarite, argyrodite, pyrargyrite, selenopolybasite, and freibergite instead of as independent selenide minerals. The low‐sulfidation epithermal deposit in the River Reef Zone, the Poboya Prospect, illustrates the potential of the West Sulawesi Arc, particularly along the Palu‐Koro Fault Zone, to host epithermal gold mineralization.

中文翻译：

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印度尼西亚中苏拉威西省波波亚地区的礁石带低硫化超热成矿作用：静脉纹理，矿石矿物学和流体包裹体

Poboya勘探区位于西北苏拉威西弧中央的西北西北东南帕卢科罗断裂带。该地区的地质包括由火山成岩的岩石，西里蒙斯莫拉斯沉积物和晚新生代花岗岩岩覆盖的古近纪-新近纪廷博形成的帕卢变质复合体。进行了岩相学，带能谱仪的扫描电子显微镜（SEM-EDS），电子探针显微分析仪（EPMA）和流体夹杂显微热分析法，以检查矿脉，矿石矿物学以及成矿流体的特征。 Poboya前景的河礁区。河礁区的石英碳酸盐岩纹理包括大量的微梳，苔藓，共形，十字形，马赛克，羽毛状，艳丽，格子状，代表初级生长，重结晶和置换的幻影叶片，平行叶片和糖状纹理。均质温度和流体盐度分别为240–250°C和0.3–0.7 wt％NaCl eq.。早期析出的矿石矿物包括伊铜矿，钙锰矿-钠长石，黄铜矿，黄铁矿，镁铁矿，闪锌矿和黄铁矿。除黄铁矿外，这些矿石矿物还与硒多贝石，方铁矿，银辉石，硫铁矿和方铅矿一起在后期沉淀。硒更优选以钠锰矿-钠金石，菱锰矿，硫铁矿，硒锰铁矿和方铁矿中硫的晶体学替代形式出现，而不是作为独立的硒化物矿物出现。Poboya前景的河礁区的低硫化超热矿床，