Problems of dating the Au-Pd mineralization of the Chudnoye deposit (the Subpolar Urals)

The Paleozoic plate boundary zone between Laurussia and Gondwana in western Pangea hosts major magmatic and hydrothermal Sn-W-Ta, Au, and U mineralization. Individual mineral deposits represent the results of the superposition of a series of exogenic and endogenic processes. Exogenic processes controlled (1) the enrichment of the ore elements in sedimentary protoliths via residual enrichment during intense chemical weathering and via climatically or tectonically controlled redox traps, (2) the spatial distribution of fertile protoliths, and, thus, eventually (3) the spatial distribution of mineralization. Endogenic processes resulting in metamorphism and crustal melting controlled the mobilization of Sn-W, Au, and U from these enriched protoliths and, thus, account for the age distribution of Sn-W and Au mineralization and U-fertile granites. It is the sequence of exogenic and endogenic processes that eventually results in the formation of mineralization in particular tectonic zones. Whereas the endogenic processes were controlled by orogenic processes during the assembly of western Pangea itself, the exogenic processes were linked to the formation of suitable source rocks for later mineralization. The contrasting distribution of magmatic and hydrothermal Sn-W-Ta, Au, and U mineralization on the Laurussia and Gondwana sides of the plate boundary zone reflects the contrasting distribution of fertile protoliths and the contrasting tectonic situation on these margins. The Laurussian margin was an active margin during most of the Paleozoic, and the distribution of different mineralization types reflects the distribution of terranes of contrasting provenance. The Gondwanan margin was a passive margin during most of the Paleozoic, and the similar distribution of a wide range of different metals (Sn, W, Ta, Au, and U) reflects the fact that the protoliths for the various metals were diachronously accumulated on the same shelf, before the metals were mobilized during Acadian, Variscan, and Alleghanian orogenic processes.

Complex spatial patterns are common in coastal marine systems, but mechanisms underlying their formation are disputed. Most empirical work has focused on exogenous spatially structured disturbances as the leading cause of pattern formation in species assemblages. However, theoretical and observational studies suggest that complex spatial patterns, such as power laws in gap‐size distribution, may result from endogenous self‐organized processes involving local‐scale interactions. The lack of studies simultaneously assessing the influence of spatially variable disturbances and local‐scale interactions has fuelled the idea that exogenous and endogenous processes are mutually exclusive explanations of spatial patterns in marine ecosystems. To assess the relative contribution of endogenous and exogenous processes in the emergence of spatial patterns, an intertidal assemblage of algae was exposed for two years to various combinations of intensity and spatial patterns of disturbance. Localized disturbances impinging at the margins of previously disturbed clearings and homogenous disturbances without any spatial pattern generated heterogeneous distributions of disturbed gaps and macroalgal patches, characterized by a power‐law scaling. Spatially varying disturbances produced a spatial gradient in the distribution of algal patches and, to a lesser extent, also a power‐law scaling in both patch‐ and gap‐size distributions. These results suggest that exogenous and endogenous processes are not mutually exclusive forces that can lead to the formation of similar spatial patterns in species assemblages.

Within communities, organisms potentially self-organize through endogenous processes that create nonrandom spatial structure as they interact with one another or modify the abiotic environment. In contrast, exogenous processes such as environmental heterogeneity or variable immigration are thought to be dominant processes controlling these spatial patterns. Although both endogenous and exogenous processes likely occur, their relative importance is still largely unknown because of limited analytical tools and the lack of experimental evidence, particularly those that address exogenous sources of environmental heterogeneity. Here, we used a soil heterogeneity experiment to examine the relative effect of endogenous and exogenous processes on plant spatial structure after five years of community assembly. Soil heterogeneity was manipulated by splitting the vertical soil profile into three soil-types that were randomly assigned to 40×40cm patches within 2.4×2.4m plots. Homogeneous plots were created by mixing all soils before filling each patch. Thirty-four grassland species were then sown into all plots and allowed to grow for five years after which the location of all plants was mapped using a 5×5cm grid. Results from point-pattern spatial analysis indicated that, even in the absence of soil heterogeneity and with initial seed arrival, spatial structure was primarily generated by endogenous processes. Although soil heterogeneity increased species aggregation at certain scales, most of the spatial structure was created by endogenous processes. These results suggest that endogenous processes may be more important than expected for generating spatial structure and can develop much faster than anticipated.

According to the “Fundamentals of state policy in the field of environmental development of the Russian Federation for the period up to 2030”, it is the anthropogenic factor that has a greater impact on the environmental situation in our country. In such conditions, the risk of dangerous geological processes increases significantly. The authors found that exogenous geological processes in combination with anthropogenic factors make a significant negative contribution to the ecological situation in the region. The object of the study is exogenous geological processes occurring on the territory of the Belgorod region. The subject of the study is exogenous geological processes, anthropogenic processes, and their contribution to the current state of the ecological situation in the Belgorod region. The purpose and objectives of the study are as follows: to study the characteristics and patterns of development of exogenous geological processes in the Belgorod region; methods and technologies for the rapid detection and prediction of the occurrence of exogenous geological processes, as well as preventive measures to reduce them in the region are developed. The authors have come to the following conclusions: On the territory of the region, the development of erosive, landslide, karst, Aeolian and suffusion processes has a significant impact on the environmental situation, the manifestation of which is primarily due to the geological structure of its parts, physical and geographical conditions, the deve­lopment and condition of the mining industry and agriculture. The dominant exogenous geological process that makes the greatest contribution to the formation of the ecological situation of the Belgorod region is linear erosion. The degree of damage to the territory of the region by erosion processes is quite high. Intensive erosion dismemberment is one of the main indicators of the unfavorable ecological and geomorphological condition of the territory. The influence of the anthropogenic factor on exogenous processes is expressed, first of all, in environmental pollution, landscape transformation and changes in the hydrological regime. The possibility of neutralizing exogenous geological processes in order to ensure the safety of the population of the Belgorod region should be justified by knowledge of the engineering and geomorphological conditions of the territory. To do this, it is necessary to create a strict modern system for monitoring exogenous geological processes, which will reduce the risks associated with them, more accurately predict their occurrence and obtain more reliable data. The solution of this problem is possible within the framework of the regional monitoring center for exogenous geological processes.

Research subject. The Dodo and Puiva quartz crystal deposits in the Neroiskiy mineral province (Subpolar Urals) were studied. Although these deposits have received sufficient research attention, a number of issues remain to be elucidated, including the age of crystal-bearing mineralization and the age of host rocks. Aim. In this work, we aim to determine the age of the metasomatites that bear quartz crystal mineralization and to develop a model of the formation of the Dodo and Puiva deposits. Materials and Methods. 40Ar/39Ar dating was carried out according to the method described by A.V. Travin et al. The argon isotope composition was measured on a Micromass 5400 mass spectrometer (IGM SB RAS). Results. Microprobe studies of the mineralogy of the Dodo and Puiva quartz crystal deposits were carried out. The temperatures of meta-somtaite formation were determined to range within 339–364°C. Six main structural and morphological types of quartz veins were identified and described. The 40Ar/39Ar ages of mica of quartz crystal deposits and host metamorphic schists were determined. Reliable plateaus were obtained, the values of which ranged within 251–257 Ma and agreed with each other within the deviation (average for 4 dates is 255 ± 2 Ma). Conclusion. A new model for the formation of quartz crystal deposits in the Subpolar Urals is proposed. The obtained 40Ar/39Ar ages correspond to the period of the post-orogenic extension of the Urals. At that time, a system of meridional grabens and rifts was formed in the Urals and in the West Siberian Plate. At the same time, and as a result of the same stretching impulse, large blocks of the middle crust (granite, schist, etc.) were brought to the Earth’s surface in the Urals. During the rise of deep blocks, at a depth of 10 km, a sharp, approximately 3-fold drop in fluid pressures (from lithostatic to hydrostatic) and a strong decrease in temperatures due to adiabatic expansion and the throttling effect occurred. The obtained 40Ar/39Ar ages (255 Ma) reflect not only the age of the quartz crystal deposits of the Subpolar Urals, but also place the moment of rise of the entire Central Ural uplift above a depth of 10 km, i.e., to the level of the upper cortex.

Complex modern micro- and spectroscopic methods for study of siderite concretions in the Lower Carboniferous terrigenous strata on the Kozhym River (Subpolar Urals) have shown that its formation was caused by destruction of clay minerals due to the activity of bacterial communities. The abundance of these bacteria was caused by gas–fluid seeps and bacterial methanogenesis processes in bottom deposits. In basins with normal marine fauna, this led to local desalination, hydrogen sulfide contamination, mass collapse of primary organisms, and the development of element-specific bacteria. The occurrence of these bacteria caused the formation of specific authigenic mineralization in the concretion of sideritic bacteriolites: the framboidal pyrite, sphalerite, galenite, barite, sulfoselenides, and tellurides.

Understanding the relative influence of endogenous and exogenous factors on population dynamics has been a key focus of ecology since its inception. Endogenous processes such as dispersal and local interactions have historically been associated with maintaining "the balance of nature" in the form of equilibrium population dynamics, while exogenous processes such as environmental fluctuations have been deemed responsible for perturbing populations away from their natural equilibrium states. However, May (1974) showed that nonlinear species interactions could induce more complex dynamics such as limit cycles and chaos. In doing so, May helped put an end to the simplistic suggestion that the complexity of population dynamics could be used to infer their drivers, with endogenous processes being stabilizing and exogenous processes being destabilizing. Spatial synchrony, which measures the degree to which the abundances of disjunct populations are correlated over time, has been shown to be a much more potent tool for identifying the drivers of population dynamics and stability across scales. Synchrony and stability are expected to be inversely related, as increased synchrony across populations promotes the risk for stochastic extinction and thus disrupts the balance of nature (Gouhier et al. 2010a; Abbott 2011). This dissertation focuses on demonstrating how multiple drivers of synchrony interact to affect population dynamics, stability, and persistence. Chapter one explores how spatial and interspecific differences in recruitment affect the relationship between dispersal, synchrony, and stability in a trophic metacommunity. Using a keystone food web model, I show that the relationship between dispersal, synchrony, and stability can be complex. Specifically, intermediate levels of dispersal dampen population fluctuations and synchrony, no matter the degree of correlation in recruitment across species. However, high levels of dispersal generate large oscillations in population size, especially when recruitment is correlated across species, but buffers population abundances via a trophic decoupling effect when there are interspecific differences in recruitment. Thus, spatial and interspecific heterogeneity in recruitment can interact to produce complex relationships between dispersal, synchrony, and stability in trophic metacommunities. Chapter two removes the assumption present in many models that dispersal is described by a time-invariant statistical distribution. In reality, dispersal is temporally stochastic, and only mimics these static assumptions when it is averaged over many generations (Siegel et al. 2008), thus creating an implicit separation of time scales between local and regional dynamics. Using a trophic metacommunity with temporally stochastic and spatially aggregated dispersal that varies at the same time scale as local dynamics, I show that removing this separation of time scales disrupts the effect of dispersal-induced synchrony. Increasing dispersal shifts control of population dynamics from local interactions to regional processes, no matter the degree of spatial aggregation in dispersal. This results in an increase in the magnitude and the frequency of population fluctuations, which prevents spatial synchrony. Spatial aggregation in recruitment promotes boom-and-bust cycles and thus extinctions, which can be prevented by decreasing spatial aggregation or allowing species to disperse independently, which promotes stability. Overall, these results suggest that relaxing the implicit separation of time scales assumption in classic models is critical for understanding the relationship between dispersal, synchrony, and stability in nature. Finally, chapter three expands this work by not only focusing on the synchronizing effect of dispersal, but also the effect of spatial and temporal autocorrelation in the environment. Using a predator-prey model, I analyze the complex interplay between these synchronizing factors, and their effect on the dynamics, persistence, and stability of communities across scales. Low levels of dispersal, both in the absence of the environment and with weak environmental fluctuations, can induce non-stationary population dynamics. Temporal autocorrelation in the environment also disrupts the synchronizing ability of spatially autocorrelated environmental fluctuations, as well as the synchronizing effect of high levels of dispersal, even though reddened environments are expected to promote synchrony due to increased memory. Strong environmental fluctuations promote extinctions, especially under temporally autocorrelated environments, but dispersal can limit these extinctions, as long as the environment is spatially uncorrelated. These results suggest that the influence of autocorrelation in the environment on synchrony, stability, and persistence depends on the degree of environmental variability and dispersal. Taken together, the results presented in this dissertation suggest that dispersal-induced synchrony may be less common in systems characterized by heterogeneous dispersal or environments. These results are critical in a time of human-induced global change, as disruptions in processes such as dispersal and environmental fluctuations are likely. Specifically, recent work has shown that the environment is becoming more spatially and temporally autocorrelated, which removes the possibility for species to escape extreme events to spatial or temporal refugia (Di Cecco and Gouhier 2018). Thus, understanding the complex effects of and interactions between endogenous and exogenous processes is key in order to predict community responses to global change events.--Author's abstract

Research subject. Minerals of palladium, platinum, and native gold, localized mainly in the veins of chromium-containing mica (fuchsite) in rhyolites. Aim. Clarification of the localization features of platinum group minerals, their species diversity, determination of the composition of minerals, relationships between precious metal minerals, establishment of the sequence of formation. Methods. Polished sections from ore samples and concentrates of heavy minerals mounted in epoxy resin were studied using optical and electron microscopes. The composition of minerals was determined using a scanning electron microscope with an energy dispersive spectrometer. Results. The main Pd minerals of the deposit are isomertieite/pseudomertieite and mertieite, the minor ones are ateneite and the unnamed Pd6BiSe mineral, and the platinum mineral is sperrylite. Isomertieite/pseudomertieite forms intergrowths with gold of any composition and structure, while mertieite occurs only with relatively low-copper gold of a homogeneous structure; therefore, significant areas of ore zones are characterized by the presence of one of the palladium arsenoantimonides. In some areas of ores, the replacement of isomertieite/pseudomertieite by mertieite wass established. Conclusions. The formation of fuchsite veinlets and the native gold, palladium minerals, and sperrylite contained therein is associated with one stage of mineral formation. Cr, Au, Pd, and Pt in ores form a single geochemical association, which indicates a common source of these elements. This source is most likely to be derivatives of basite-hyperbasite magmatism.

The evolution of the Moon is driven by both endogenic (e.g., magmatism) and exogenic processes (e.g., impact). The lunar surface can be divided into 3 first-order tectonic units based on differences in geochemistry, crustal thickness, topography, and distribution of structures. However, the interpreted boundaries demarcated by different features varied widely. As research progresses, the understanding of the lunar structure is continuously improving, and new types of structures are constantly being discovered. The previous structural classification system needs to be updated. According to the major geological events and dynamic evolution, the evolutionary history of the Moon can be divided into 3 stages and 1 pivotal event. The first stage (4.52 to 4.3 Ga) is the evolution of the magmatic ocean, and it was dominated by endogenic processes. The formation of South Pole-Aitken (SPA) basin (~4.3 Ga) is the pivotal event of crustal evolution and indicates that the lunar crust had cooled and consolidated to sufficient rigidity to preserve structures. Both endogenic and exogenic processes were active in the second stage (4.3 to 3.0 Ga), which results in numerous impact basins, mare basalt flooding, and different types of associated structures. The last stage (3.0 Ga to the present) is late neotectonic activity, which has weak modification of the tectonic framework. Response of tectonic framework and structure to lunar major geological events had been organized and discussed in this paper, and key scientific issues are summarized. This study can provide reference and support for implementation of subsequent lunar exploration projects.

The paper presents the study results on granites of the Kozhim massif (the Subpolar Urals). The joint Kozhim massif earlier included the Kuzpuayu granite body. It lies to the north of the Kozhim massif. For this reason, many previously obtained conclusions were summarizing. The detailed study on rocks that included analyses of cuts, accessory and ore mineralization, petrogenic and rare elements was conducted in the Geoscience subdivision at the Institute of Geology, Komi Science Centre of the Ural Branch of the Russian Academy of Sciences. This study helped to clarify and supplement the information about the granitogenesis of the considered massif. According to the obtained data, the granites under study are high-potassium high-alumina leucogranites of normal and moderate alkalinity with high content of orthoclase and the presence of plagioclase of two generations. The rocks were formed under intraplate and post-collision geodynamic conditions from crustal parent melts enriched with lanthanum and cerium. These melts are characterized by the dependence of potassium and titanium concentrations on changes in silica content.

Spatial patterns observed in ecosystems have traditionally been attributed to exogenous processes. Recently, ecologists have found that endogenous processes also have the potential to create spatial patterns. Yet, relatively few studies have attempted to examine the combined effects of exogenous and endogenous processes on the distribution of organisms across spatial and temporal scales. Here we aim to do this, by investigating whether spatial patterns of under-story tree species at a large spatial scale (18 ha) influences the spatial patterns of ground foraging ant species at a much smaller spatial scale (20 m by 20 m). At the regional scale, exogenous processes (under-story tree community) had a strong effect on the spatial patterns in the ground-foraging ant community. We found significantly more Camponotus noveboracensis, Formica subsericae, and Lasius alienus species in black cherry (Prunis serotine Ehrh.) habitats. In witch-hazel (Hamamelis virginiana L.) habitats, we similarly found significantly more Myrmica americana, Formica fusca, and Formica subsericae. At smaller spatial scales, we observed the emergence of mosaic ant patches changing rapidly in space and time. Our study reveals that spatial patterns are the result of both exogenous and endogenous forces, operating at distinct scales.

Research subject. REE-containing minerals in metamorphic pre-Cambrian rocks of the northern part of the Lyapinskii anticlinorium of the Subpolar Urals. Aim. To establish typochemical features and conditions for the formation of rare-earth minerals in the studied rocks. Materials and methods. Chemical compositions and photographs of minerals were obtained using a JSM-6400 scanning electron microscope with a Link energy spectrometer and a Tescan Vega 3 LMH with an Instruments X-Max energy-dispersive attachment. The content of rock-forming oxides was determined by the gravimetric chemical method. The contents of rare and rare-earth elements were determined using an Agilent 7700x inductively coupled plasma mass spectrometer. Results. Rare earth carbonates and titanoniobates were identified in the pre-Cambrian rocks of the Subpolar Urals. In the mica garnet-bearing crystalline schists of the Nyartinskii complex, ankylite-(Ce) and hydroxylbastnäsite-(Ce) were identified for the first time, and hydroxylbastnäsite-(La) was identified in the actinolite-bearing quartz-albite-epidote-chlorite schists of the Puyva Formation. In the metarhyolites of the Sablegorskii Formation, the typochemical features of bastnäsite-(Ce), kainosite-(Y), and аeschynite-(Y) were studied. Ankylite-(Ce), hydroxylbastnaesite-(Ce), and hydroxylbastnaesite-(La) from Lower Proterozoic and Upper Riphean metamorphic rocks were probably formed during metamorphogenic-hydrothermal processes in the presence of minerals containing rare-earth elements and with the participation of carbon dioxide solutions. A scheme for the formation of rare-earth minerals was proposed for the metarhyolites of the Upper Riphean-Vendian Sablegorskii Formation. Aeschynite-(Y) was probably formed as a result of the transformation of rhyolites, due to the presence in the residual melt of increased concentrations of some rare metals, i.e., Zr, Nb, Y, and REE. As a result of metamorphogenic-hydrothermal processes, bastnäsite-(Ce) replaces allanite-(Ce). Kainosite-(Y) in metarhyolites is the latest mineral, formed due to the recrystallization of allanite-(Ce) and bastnäsite-(Ce) during the decomposition of аeschynite-(Y). Conclusions. The study of REE-containing minerals in Precambrian rocks of the Lyapin anticlinorium found that rare-earth titanoniobates were formed during the post-magmatic stage of metarhyolite transformation. The formation of rare-earth carbonates may be associated with metamorphic and hydrothermal processes.

Objekt ovog istraživanja su padine uzvišenja šireg područja Duvanjskog polja. Padine se mogu definirati kao reljefne plohe određene geografskim položajem, nagibom u odnosu na horizontalnu površinu, izloženošću (ekspozicijom) u odnosu na strane svijeta, te stupnjem zakrivljenosti (profilne i planarne). Recentni oblik padina posljedica je utjecaja niza prirodnih i društvenih faktora tijekom geneze i evolucije reljefa. Analizom morfometrijskih parametara moguće je dovesti u vezu značajke padina s geološkom građom i sastavom, ali i ostalim prirodno-geografskim čimbenicima (npr. klima, pedologija, vegetacija itd.). Ciljevi ovog istraživanja su: a) analiza morfometrijskih pokazatelja reljefa, b) analiza odnosa između morfometrijskih pokazatelja, strukturnih i litoloških značajki, i c) sinteza svih analiziranih pokazatelja da bi se dobio detaljniji uvid u egzogeomorfološke i morfostrukturne značajke područja i omogućila procjena opsega i intenziteta dominantnih geomorfoloških procesa. Pri tome, posebna pažnja posvećena je detaljnoj geomorfometrijskoj analizi makromorfostruktura šireg područja Duvanjskog polja u GIS okružju temeljem digitalnog modela reljefa (DMR). Geomorfometrijska analiza reljefa primijenjena u ovom radu uključila je korištenje različitih metoda za precizno računanje numeričkih parametara reljefa istraživanog područja, što je omogućilo međusobnu usporedbu navedenih parametara ali i usporedbu s kartom tektonskih jedinica i geološkom kartom. Cilj ovakvog pristupa je egzaktnija interpretacija morfometrijskih parametara reljefa kao indikatora značajki endogenih i egzogenih procesa na istraživanom području.

Objekt ovog istraživanja su padine uzvišenja šireg područja Duvanjskog polja. Padine se mogu definirati kao reljefne plohe određene geografskim položajem, nagibom u odnosu na horizontalnu površinu, izloženošću (ekspozicijom) u odnosu na strane svijeta, te stupnjem zakrivljenosti (profilne i planarne). Recentni oblik padina posljedica je utjecaja niza prirodnih i društvenih faktora tijekom geneze i evolucije reljefa. Analizom morfometrijskih parametara moguće je dovesti u vezu značajke padina s geološkom građom i sastavom, ali i ostalim prirodno-geografskim čimbenicima (npr. klima, pedologija, vegetacija itd.). Ciljevi ovog istraživanja su: a) analiza morfometrijskih pokazatelja reljefa, b) analiza odnosa između morfometrijskih pokazatelja, strukturnih i litoloških značajki, i c) sinteza svih analiziranih pokazatelja da bi se dobio detaljniji uvid u egzogeomorfološke i morfostrukturne značajke područja i omogućila procjena opsega i intenziteta dominantnih geomorfoloških procesa. Pri tome, posebna pažnja posvećena je detaljnoj geomorfometrijskoj analizi makromorfostruktura šireg područja Duvanjskog polja u GIS okružju temeljem digitalnog modela reljefa (DMR). Geomorfometrijska analiza reljefa primijenjena u ovom radu uključila je korištenje različitih metoda za precizno računanje numeričkih parametara reljefa istraživanog područja, što je omogućilo međusobnu usporedbu navedenih parametara ali i usporedbu s kartom tektonskih jedinica i geološkom kartom. Cilj ovakvog pristupa je egzaktnija interpretacija morfometrijskih parametara reljefa kao indikatora značajki endogenih i egzogenih procesa na istraživanom području.

The Selodong prospect is located in the southwest sector of Lombok Island which tectonically lies within the W-E trending Sunda-Banda magmatic arc, which hosts various gold-base metal mineralizations including porphyry and epithermal deposits. Lombok Island, particularly southwestern portion of the island is known to hosts gold, silver and copper prospects, including Selodong prospect. The Selodong prospect is divided into several sub-prospect areas which include the Blongas, Montong Botek, Kekalik and Belikat. However, this study only focuses on the Blongas sub-prospect. The study is aimed to discusses the geology, characteristics of alteration and mineralization of the sub-prospect. To achieve the objective, some methods such as mapping and numerous laboratory works were conducted. Petrography to identify alteration minerals, ore microscopy to identify type of ore minerals, and fluid inclusion microthermometry to characterize ore fluid were performed. The geological conditions of the study area are composed of andesite lava, andesite breccia, diorite intrusion and alluvial deposit. Typical porphyry alteration type i.e., potassic is present. Argillic, silicic, advanced argillic, propylitic and phyllic alterations are also identified. The distribution of potassic and some argillic alteration is controlled by lithology, while silicic alteration, advanced argillic, propylitic and some argillic alterations are controlled by geological structures with an NW-SE and NE-SW trending patterns. Propylitic alteration is characterized by chlorite + epidote + calcite ± clay. Argillic alteration is marked by the presence of clay minerals such as clay + quartz. Advanced argillic alteration is typified by quartz + alunite + pyrolusite ± paragonite. Phyllic alteration is typified by sericite + quartz ± clay. Potassic alteration is marked by secondary biotite + quartz ± clay. Silicic alteration is marked by quartz + pyrolusite + epidote. Ore mineralization in the study area is associated with massive and stockwork vein textures. Ore and metalliferous minerals are found as magnetite, chalcopyrite, pyrite, hematite, goethite, jarosite, sphalerite, pyrrhotite, chalcocite and native gold. Generally, homogenization temperatures in the research area range from 543 - >600 °C, with salinity of 26.3 - 73.95 wt.% NaCl eq associated with potassic alteration, whereas homogenization temperatures range from 251 to 349 °C, with salinity of 5.46 - 8.38 wt.% NaCl eq. associated with silicic alteration. Based on those characteristics, the prospect in the study area indicates a porphyry deposit type, which is transition to high sulfidation epithermal.