23 hasil untuk "Ebrahim Tale fazel"
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Artikel Jurnal Teks lengkap
Ilvaite trace mineral chemistry as a thermodynamic recorder of retrograde alteration and metallogenic indicator for discrimination of skarn deposits: an example from the iron deposit in North Sanandaj-Sirjan Zone
Ilvaite, CaFe22+Fe3+(Si2O7)O(OH), is one of the important trace minerals in the retrograde alteration stage of skarn deposits. In this contribution, by using microscopic evidence, X-ray diffraction (XRD) and electron microprobe analysis (EPMA), the crystallographic characteristics, crystal…
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Mineralogy, mineral chemistry and sulfur isotope geochemistry of the Baharieh copper deposit (NE Kashmar): implications for ore genesis
The Baharieh copper deposit with an approximately tonnage 1 million tons of copper ore, is located in the Khorasan Razavi Province and 30 km of northeastern of the Kashmar. Based on subdivision structural geology of the Iran, the deposit is situated in the Sabzevar zone and Taknar complex. The…
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Geochemistry, mineralization and alkali-Fe oxide alteration of the Lake Siah iron±apatite deposit (northeastern Bafq), Bafq-Saghand metallogenic province
Introduction Ore deposits of the Bafq-Saghand metallogenic province (IRAN) with Proterozoic age represent that they belong to classic genetic model for hydrothermal iron oxide (Cu, Au, U, REE) deposits, which is widely referred to as iron oxide copper-gold (IOCG) and iron oxide-apatite (IOA)…
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Intermediate sulfidation epithermal mineralization of No. 4 anomaly of Golojeh deposit (N. Zanjan) based on mineralography, alteration and ore fluid geochemistry features
The base (Cu–Pb–Zn) and precious metals (Ag±Au) mineralization at the No. 4 anomaly of Golojeh deposit occurred in volcanic and sub–volcanic Eocene–Oligocene host rocks, in the central part of the Tarom–Hashtjin zone. Basic to intermediate volcanic, volcaniclastic and sub–volcanic rocks are…
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Mineralization, ore mineral chemistry and sulfur stable isotopes at the Chaldaq gold prospect (north Takab): evidence for gold formation mechanism
Introduction The Takab-Angouran ore field, one of the Iran’s largest gold districts, is located in northwestern Zagros and belongs to the northwestern part of the Sanandaj-Sirjan Zone. This area has a dominant NW-SE structural trend and is spatially associated with the Sanandaj-Sirjan zone. Its…
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The role of sulfidation of Fe-carbonate rocks in increasing gold contents at the Zarshuran deposit (northern Takab), Takab-Angouran metallogenic district
Iron and arsenic sulfides are considered as the most important gold hosts in the sediment-hosted disseminated invisible gold deposits. The Zarshuran gold deposit (155 tons Au with average grade of 2.63 g/t) is formed in the Lower Cambrian black shale and siltstone (Zarshuran unit) and Fe-rich…
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Magmatic controls, oxidation state, and geochemical-metallogenic evolutions in development of the Bashmagh Cu deposit (SE Hashtroud), Urumieh-Dokhtar magmatic arc
The Bashmagh Cu deposit (proven reserves of 2.1 Mt @ 0.61% Cu) is located in the Urumieh-Dokhtar magmatic arc of NW Iran. Mineralization is structurally controlled by NW-SE faults and it occurs as disseminations, quartz-carbonate-chalcopyrite veins and/or hydrothermal breccias hosted by Oligocene…
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Mineralogy, fluid inclusions and genesis of the Middle Triassic carbonate-hosted Chah-Mileh Pb-Zn deposit (NE Anarak), Central Iran
Introduction The Himalayan-Tibetan and Zagros Mountain ranges which are the youngest and most extensive continental-collision orogens in Tethyan domain host many important sediment-hosted Pb-Zn deposits, including the world-class Jinding, Huoshaoyun, Mehdiabad, and Angouran deposits (Reynolds and…
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Geochemistry of apatite and host rocks in Lakeh Siah iron± apatite deposit (Northeast Bafq): Implications for origin and tectonomagmatic setting
The Lakeh-Siah region is situated in the Central Iran Zone (CIZ), 40 km northeast of Bafq city in the Yazd province. The rocks of the study area belonging to the lower Cambrian; including rhyolite, andesite and pyroclastic surge with porphyry to glomeroporphyric textures. The intrusive igneous…
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Disseminated, veinlet and vein Pb-Zn, Cu and Sb polymetallic mineralization in the GaleChah-Shurab mining district, Iranian East Magmatic Assemblage (IEMA)
The Iranian East Magmatic Assemblage (IEMA) in the Central Lut region, hosted porphyry and vein-type polymetallic mineralization. The GaleChah-Shurab mining district is located in NW of the IEMA. Volcanic and subvolcanic bodies in the area are composed of calc-alkaline porphyry quartz-latite…
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Whole-rock geochemistry and crystal chemistry of apatite at intrusive suites of the Qeynarjeh-Angouran district (west of Zanjan): an approach to the identification of skarn-causative granitoids and magmatic-metallogenic evolutions
The Qeynarjah-Angouran district is located at the intersection of the Urumieh-Dokhtar and the Sanandaj-Sirjan structural zones in NW Iran. In this area, intrusive suites of Middle Triassic-Upper Jurassic age are exposed, including the Gharavol-Khane quartz diorite, the Kuh-e Belghais granite…
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Geochemistry of basaltic rocks of Meshkin- Rasht Abad area (North of Zanjan)
The Meshkin-Rasht Abad area is a small part of the western Alborz-Azarbaijan magmatic belt (AAMB). Field investigations reveal that andesitic-basalt rocks are the dominant rock units of the area with high-K calc-alkaline to shoshonitic affinities. On the basis of geochemical features all rocks are…
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Mineralogy, occurrence of mineralization and temperature-pressure conditions of the Agh-Daragh polymetallic deposit in the Ahar-Arasbaran metallogenic area
Introduction The Ahar-Arasbaran metallogenic area (Qara Dagh zone) is located in the northwest of Iran and the western part of the Mazandaran Sea. At the base of the structural classification from Nabavi (1976), this area is situated in the Alborz-Azerbijan magmatic belt. Sheviar Dagh (Ahar…
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Temperature condition, sulfidation state, and gold formation mechanism of the Atash- Anbar polymetallic deposit (south Qazvin) based on mineralization, alteration and chemistry of ore minerals
…during this period is still poorly understood (Alipour-Asll, 2019; Tale Fazel et al., 2019; Zamanian et al., 2020). Despite well-known Eocene to Miocene hydrothermal systems associated with extension-related and/or arc magmatism from the UDMA, the temporal and spatial association between…
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Genesis of Eocene volcanic-hosted copper deposits in the Kuh-e-Jarou Mining District (South Eshtehard): Constraints from geology, mineralization and fluid inclusions
Introduction The Saveh-Kashan-Qom copper belt, in the northern part of the Urumieh-Dokhtar Magmatic Arc (UDMA) consists of two of the oldest (gold and copper) zones in Iran (Samani, 1998; Rajabpour et al., 2017) where Upper Eocene-Oligocene Mard Abad-Bouin Zahra volcanic suite is situated. This…
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The role of right-lateral shear zone and folding-related fractures in development of Zarshuran gold deposit, Takht-e-Soleyman complex, northern Takab
Introduction The Zarshuran gold deposit is located in the Takht-e-Soleyman complex, NW Iran. It is formed in the Iman Khan NW-trending anticline (Mehrabi et al., 1999; Samimi, 1992). The rock units at Zarshuran mainly consist of Precambrian sequence (Iman Khan schist, Chaldaq limestone and…
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Alteration, geothermometry, Raman spectroscopy and O-H stable isotopes studies on Lakehsiah 1 deposit, Yazd province, Iran
Introduction The Lakehsiah mining district is hosted in Early Cambrian volcano-sedimentary units (CVSU) of the Kashmar–Kerman zone, Central Iran. The Kashmar-Kerman belt is located between the Yazd block in the west and the Tabas block in the east and it is parallel to the Poshed badam, Tabas and…
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Mineralization, fluid inclusions and genesis of the Bagher Abad and Darreh Badam fluorite ore deposit, southeast of Mahallat
Introduction Fluorite ore deposits are classified into three main groups: (1) magmatic deposits, (2) structures related deposits, and (3) sedimentary deposits (Dill, 2010). More than 30 fluorite occurrences with approximately 1.35 million tons of reserves have been recognized in Iran (Miller…
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Pressure-temperature condition and hydrothermal-magmatic fluid evolution of the Cu-Mo Senj deposit, Central Alborz: fluid inclusion evidence
Introduction The Senj deposit has significant potential for different types of mineralization, particularly porphyry-like Cu deposits, associated with subduction-related Eocene–Oligocene calc-alkaline porphyritic volcano-plutonic rocks. The study of fluid inclusions in hydrothermal ore deposits…
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Fluid Evolution During Mineralization of Atashkuh Fluorite-Barite (±Sulfide) Deposit, South of Delijan
Introduction More than 30 fluorite occurrences with approximately 1.35 million tons of reserves have been recognized in Iran (Ghorbani, 2013). The Atashkuh fluorite-barite (±sulfide) deposit is one of four occurrences located south of the city of Delijan in Markazi province, about 80 km SE of Arak…