Mineralization styles and ore-forming conditions of the …
There are two basic porphyry deposit types which are differentiated mainly on the ... Compared with most of the calc-alkalic porphyry deposits in the Philippines (e.g., Sto. Tomas ... °C. In QBX-Un (stage 4B), native gold and hessite are accompanied by tetradymite and are associated with chalcopyrite, Fe-poor sphalerite (characterized by its ...
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Metal Concentrations in Sediments of the Alinsaog River, …
Nickel had a positive association with Fe (r=0.925) and Mn (r=0.931), confirming the reports that hydroxide and oxides of Fe and Mn have scavenging actions on trace metals.64 The same article showed a strong positive relationship of Fe and Mn with Cr, Zn, Ni, and Co in estuarine sediments.64 In the present study, Co was correlated with Fe and ...
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Mineralogical and Geochemical Characterization of the
In this study, we present mineralogical and geochemical characterization of samples systematically collected from a nickel laterite profile at the Sta. Cruz nickel laterite deposit, Zambales ...
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Igneous rocks related to porphyry Cu‐Au mineralization at the …
The Dizon Au-rich porphyry Cu deposit, 0.67 Mt Cu and 174 t Au, is hosted by diorite and andesite porphyry intrusions, dated at ~2.5 Ma. Amphibole and Fe-Ti oxides in relatively unaltered rocks ...
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(PDF) Skarns and Skarn Deposits
The Fe skarn and vein-type Cu mineralization types are common in the Eastern Taurus Mountains. This study aims to determine the U-Pb geochronology of garnets of varying sizes within the skarn zone ...
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Mineralogical and Geochemical Characterization …
In this study, we present mineralogical and geochemical characterization of samples systematically collected from a nickel laterite profile at the Sta. Cruz nickel laterite deposit, Zambales, Philippines. Wavelength …
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Types of sulfide-rich epithermal deposits, and their …
In order to highlight these relationships, we discuss a case study of one district in Luzon, Philippines, that hosts two types of epithermal deposit located supradjacent to a large porphyry...
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Mineralogy and geochemistry of the Berong Ni-Co laterite deposit …
The Ni-laterite deposit at the San Felipe plateau, located 30 km northwest of Camagüey, in cen-tral Cuba, is the best example of a clay-type deposit in the Caribbean region.
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Regional geology of the Philippine archipelago …
The Atlas porphyry Cu–Au deposit is located in central Cebu Island in the Philippines, with a proven mineral reserve of 1,420 Mt @ 0.45% Cu, 0.24 g/t Au, 0.018 g/t Mo and 1.8 g/t Ag.
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Minerals | Special Issue : Iron Oxide-Copper-gold (IOCG) Deposits …
We conclude that the Xianglushan Fe-Cu deposits are both similar to and different from typical iron-oxide copper gold (IOCG) deposits in terms of alteration styles and hydrothermal mineral assemblages, and are thus best classified as IOCG-like deposits hosted in submarine volcanic-sedimentary rocks. ... 3.8–8.9 wt %) was similarly noted in ...
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Chlorite as an exploration indicator for concealed skarn …
The Tonglushan Cu–Au–Fe deposit (86.3 Mt @ 1.66% Cu, 0.94 g/t Au and 39.4% Fe) is one of the largest Cu–Au polymetallic skarn deposits in the Middle–Lower Yangtze River metallogenic belt (MLYRB, Eastern China). ... For skarn-type deposits, Han et al. (2018) found that the Fe-rich chlorite with higher Pos2250 values (>2251 nm) could ...
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Review Origin and depositional history of platinum-group …
Most placer PGM deposits are characterized by the dominance of one of two types of PGM alloy, i.e., Pt-Fe alloys or Os-Ir-Ru alloys (Cabri et al., 1996, based on 1,709 worldwide analyses). Johan (2006) studied historical concentrates from Nizhni Tagil placers related to Soloviev Mountain (Russia), reporting that the PGM are composed of 75% (by ...
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Mineral Resources of the Philippines
Study with Quizlet and memorize flashcards containing terms like Larap Fe-Cu-Mo, Sta. Ines Fe, Lamin Fe, Universal Formation, Inclusions of Miocene Calc Sediments intruded by Sta. Ines …
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Apatite trace elements and O-Sr isotopes reveal different …
The eastern Tianshan, located in the southwestern part of the central Asian orogenic belt (CAOB), is an important target for Fe exploration in NW China (Mao et al., 2005).It contains numerous Fe deposits characterized by multi-stage, multi-origin and poly-mineral associations (Zheng et al., 2020).Three types of Fe deposit are identified in the eastern …
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Geology of the Far Southeast Deposit Below 700-m Elevation
The Far Southeast porphyry deposit was discovered in 1980 (Concepcion and Cinco, 1989), subjacent to a lithocap (Sillitoe, 1995) of residual quartz with a quartz-alunite alteration halo that hosts the Lepanto enargite-gold deposit (Fig. 1B; Gonzalez, 1959; Claveria, 2001).Mining of the Lepanto deposit between 1938 and 1996 produced 36.3 million tonnes (Mt) …
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Mineral Distribution and Geological Features of the …
Deposits occurring in the frontal arc are characterized mainly by the predominance of nickel, laterite, chromite and cupriferous massive sulfide, under a geologic setting distinguished by …
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(PDF) Epithermal mineralization of the Bonanza …
The deposit exhibits mineralization characteristics typical of intermediate sulfidation epithermal deposits based on the dominant chalcopyrite-pyrite mineral assemblage; illite-muscovite-chlorite ...
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Geological Society of the Philippines
GENESIS OF FERRUGINOUS BAUXITE DEPOSITS IN BUCAS GRANDE ISLAND, SURIGAO MINERAL RESERVATION, MlNDANAO. Fernando B. Esguerra ... averaging 52.69% AI 2 O 3, 18.32% Fe and 11.16% SiO 2, approximately 1.2 million dry metric tons; (2) Type B - averaging 42.88% AI 2 O 3 ... Geological Society of the Philippines.
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Stratigraphic Correlation of the Malusok Volcanogenic …
Philippines hosts a number of VMS deposits (Fig. 1). They could be classified into several genetic types as fol-lows. Based on the idealized model set by Sato (1974), Kuroko-type copper deposits have been identified in Dupax, Nueva Vizcaya localized within the Cretaceous to Eocene Caraballo Formation (Bureau of Mines and Geosciences [BMG], 1986).
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Characterization of clay scales forming in Philippine …
Six types of clay scales were identified, but the predominant one, comprising 60– of the clay deposits in a well, is Mg- and Fe-rich and referred to as a vermiculitic species. The crystallinity, degree of disorder, textures, optical characteristics, structure and relative amounts of structural Al, Mg and Fe vary with time, temperature and ...
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Global rare earth element resources: A concise review
An example of this is the Bastnäs-type Fe-REE-(Cu–Mo–Bi–Au) deposits in Bergslagen, Sweden (Holtstam et al., 2014). Occasionally, REE mineralization may be hosted within sedimentary rocks or mafic gneiss; however, REEs are typically concentrated through magmatic-hydrothermal processes or derived from hydrothermal fluids. ... Philippines ...
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Mineralogy and geochemistry of the Berong Ni-Co laterite …
In this study, we explore the nature and paragenetic sequence of the different types of serpentine veins identified in the harzburgite bedrock and saprock of the three Ni-Co laterite …
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What mineral deposits are found in the Philippines?
According to the Philippine Economic-Environmental and Natural Resources Accounting, the most abundant metals in the Philippines are gold, copper, chromite, nickel, …
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Types of sulfide-rich epithermal deposits, and their …
Lepanto–Victoria–Far Southeast deposits, Philippines, as examples ... A variety of epithermal deposit types have long been recognized (Lindgren, ... along with fine pyrite, Fe-poor sphalerite ...
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PETROGRAPHIC AND PALEONTOLOGICAL …
The Sta. Fe Formation is considered to be the oldest sedimentary sequence covering the Northern Sierra Madre stratigraphic group. The formation consists of limestone and clastic members.
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(PDF) Mineralogical and Geochemical Characterization of the …
For example, Mn oxyhydroxides, which are often reported in lower oxide zones of Ni laterites [5,46], including two other deposits from the Philippines [47,48], can host Ni. In particular, significant amounts of Ni (up to 15.6 wt%) have been reported to be associated with Mn oxyhydroxides from the Intex deposit in Mindoro, Philippines [48].
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Skarn Deposits | Seventy-Fifth Anniversary Volume
Skarn deposits are among the most abundant and variable of all types of mineral deposits; yet, in spite of their diversity, they exhibit systematic geologic, petrologic, and mineralogic features which permit classification and detailed investigation. The most useful classification of skarn is based on the dominant calc-silicate mineral assemblages.
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Mineral Distribution and Geological Features of the …
Deposits belanging to the third arc are primarily characterized by the gold bearing copper sulfides with pyrite and minor magnetite and molybdenite. The mineralizations are closely related to …
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Co, Sc, and Ni enrichment in the Cagdianao nickel laterite deposit …
In terms of major elements, Fe is dominant in the limonite zone (up to 59.76 wt.%). ... from a nickel laterite profile at the Sta. Cruz nickel laterite deposit, Zambales, Philippines. Wavelength ...
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Constraints of Fe-O isotopes on the origin of magnetite in …
As shown by Fig. 6, like magnetite from many other Kiruna-type iron deposits, both the massive magnetite and veined magnetite at El Laco plot into the ortho-magmatic area, even though most of their δ 18 O values are higher than 4.0‰. Thus, we infer that the massive and veined magnetite in El Laco deposit might be derived from Fe-rich ortho-magmatic liquids …
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