New Mineral Occurrences in Massive Sulfide Deposits from Mănăilă, Eastern Carpathians, Romania by Gheorghe Damian, Andrei Ionuț Apopei, Andrei Buzatu, Andreea Elena Maftei, Floarea Damian

“…The compact and precompact pyrite-rich ores, located in sericite ± quartzite schists and covered by rhyolitic metatuffs, are of hydrothermal-sedimentary type metamorphosed in the greenschist facies. …”
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Research on Fluid Inclusions in Vein Quartz as Higher Purity Quartz Sand by Li Zhang, Xiuquan Hu, Xinghua Peng, Dahai You, Guodong Li, Jin Zhang

“…As an important new non-metallic electronic material，higher-purity quartz sand has high requirements on impurity elements in inclusions of raw materials．Besides that ，the presence of inclusions has an important impact on its purity and performance．Based on this，the fluid inclusions in the vein quartz abroad have been studied in detail by using optical microscope, X-ray diffraction，plasma atomic emission spectroscopy，micro temperature measurement and laser Raman spectroscopy．The results show that the content of SiO2 in the ore is beyond 99.9%，and the impurity elements are mainly Al，alkali metal elements and Fe．The inclusions in the quartz are single-phase saline solution inclusions，two-phase saline solution inclusions and containing CO2 three-phase inclusions．There is no solid inclusions in the ore．The uniform temperatures of the two samples inclusions are 120～270℃ and 90～140℃．As a result，the deposit of the ore is medium-low temperature hydrothermal metamorphic quartzite．The raw ore can be used as the raw material of higher purity quartz sand after inclusion elimination and impurity reduction.…”
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Determination of Silica in Geological Samples by Silicon-Molybdenum Blue Spectrophotometry Using High-pressure Acid Digestion by DONG Xue-lin, HE Hai-yang, CHU Qin, SONG Zhou

“…The validity of the method was evaluated by analyses of rock, soil, sediment and quartzite reference materials. The results of SiO2 were in good agreement with certified values and the relative standard deviation (n=10) was less than 1%. …”
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Detrital-Zircon Age Spectra of Neoproterozoic-Paleozoic Sedimentary Rocks from the Ereendavaa Terrane in NE Mongolia: Implications for the Early-Stage Evolution of the Ereendavaa T... by Laicheng Miao, Mingshuai Zhu, Chenghao Liu, Munkhtsengel Baatar, Chimidtseren Anaad, Shunhu Yang, Xingbo Li

“…Our results show that the protoliths of the quartzite assemblage of the Ereendavaa terrane basement (or proto-Ereendavaa terrane) was deposited after ca. 1.15 Ga on a passive continental margin. …”
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Petrographic and Geochemical Analyses of Kirana Hills Shield Rocks around Sargodha and Economic Potential by Muhammad Waseem Khan, Syed Abbas Sultan, Iftikhar Alam, Muhammad Saqib Izhar

“…Our studies also reveal that no evidence of quartzite has been found in the samples collected from above mentioned areas of Kirana, although it has been reported in previous literature. …”
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New orogenic type gold occurrences in the Uyanga ore knot (Central Mongolia) by Ariunbileg Sodov, Olga Gaskova, Altansukh Gankhuyag, Dagva-Ochir Lkhagvasuren, Otgonbaatar Dorjsuren, Oyunchimeg Tumen-Ulzii, Battushig Altanbaatar

“…The rocks of the Erdenetsogt formation have an irregular gold content: 0.96 g/t Au is determined in quartz vein taken from trench of the Burgetei occurrence (BG-7/16), Au content is highest up to 3.5 g/t in the quartzite-jasper (Ult-7/16 and Ult-9/16) cut by quartz veins in the Ult occurrence. …”
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Insights from a comparative GIS-MCDA groundwater vulnerability assessment in a granitic and metasedimentary fractured rock media by José Teixeira, Helder I. Chaminé, José Martins Carvalho, Augusto Pérez-Alberti, Fernando Rocha

“…The highest IPI values were identified in the regional aquifer quartzite unit at Herrera del Duque (SW Spain). The recharge values are around 60 to 80 mm/year. …”
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TRIASSIC OF SPITI (TETHYS HIMALAYA, N INDIA) by EDUARDO GARZANTI, FLAVIO JADOUL, ALDA NICORA, FABRIZIO BERRA

“…Accumulation rates gradually begin to decrease before the close of the Triassic, when the "Quartzite series" records a sharp regressive event, followed by renewed transgression at the base of the Kioto Group.…”
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The probem of innovative development in the fild of public management of subsoils use of iron ore deposites by V. O. Iemelianov, I. D. Bahrii, Ia. M. Kryl, S. O. Kuzmenko

“…Comprehensive geological, geochemical, and geological-technological study of two geological and industrial types of iron ores: 1) natural-rich hematite (martite) ore and 2) silicate-magnetite poor ores of iron quartzite from Kryvbas deposits, as well as a critical analysis of the literature on the legislative regulation of payments for subsoil use in Ukraine, etc. …”
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An unusual coronoid fracture in a fragment of ulna recovered from the Prehistoric site of Buraca da Moira Rock Shelter (Boa Vista, Leiria) by Sandra Assis, Rute Branco, Vânia Carvalho, Rita Dias, Carlos Duarte, Marina Évora, Anne Farias, Trenton Holliday, João Marreiros, Roxane Matias, Patrícia Monteiro, David Nora, Eduardo Paixão, Telmo Pereira

“…The recovery of chert, constiquartz and quartzite blanks, a schist plate, as well as adornments in bone and shell indicates a Late Neolithic-Chalcolithic chronology. …”
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Multi-Analytical Techniques to Define the Mineralogical and Petrophysical Characteristics and Provenance of Siliceous Lithic Findings: The Case Study of La Calvera Rock Shelter (Ca... by Stefano Columbu, Dario Fancello, Gianni Gallello, Mirco Ramacciotti, Agustin Diez-Castillo

“…The results show that the different siliceous materials (quartzite, cherts, hyaline quartz) can be distinguished through the basic analytical techniques used here. …”
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U-Pb (LA-ICP-MS) age of detrital zircons and the sources of terrigenous sediments of the Ipsit suite, Karagass series (Sayan segment of the Sayan-Baikal-Patom belt) by Z. L. Motova, T. V. Donskaya, D. P. Gladkochub, V. B. Khubanov

“…The acidic igneous rocks are dominant in the source area, as evidenced by the presence of granitoid and quartzite fragments in the clastogenic component, as well as the set of accessory minerals typical of the igneous rocks of the acidic composition, and the distribution pattern of rare and trace elements. …”
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Hydrogeological Characterization of the Thyspunt Area, Eastern Cape Province, South Africa by Seeke C. Mohuba, Tamiru A. Abiye, Molla B. Demlie, Moneri. J. Modiba

“…Owing to ductile deformation in the form of folding, the fractured quartzite and shale aquifers resulted in an artesian condition, often characterized by slightly acidic (pH ≤ 6) and iron-rich groundwater. …”
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Polymetallic Uranium Mineralisation in Rohil, Rajasthan, Western India: Insights from Mode of Occurrences, Structural Controls, Alteration Geochemistry and Exploration by Ajoy Kumar Padhi, Mrinal Kanti Mukherjee, Brajesh Kumar Tripathi, Dheeraj Pande, Balbir Singh Bisht, Bhabesh Chandra Sarkar

“…This zone contains several anastomosing mineralised veins defined by a prominent joint that is set in quartzite that strikes subparallel to the axial surface of the F₂ isoclinal folds and the pervasive schistosity S₁ in the quartz–feldspar–biotite schist. …”
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Discovery of Disulfane (H₂S₂) in Fluid Inclusions in Rubies from Yuanjiang, China, and Its Implications by Wenqing Huang, Pei Ni, Jungui Zhou, Ting Shui, Junying Ding, Renzhi Zhu, Yitao Cai, Mingsen Fan

“…This is the second case of the sulfane-bearing fluid inclusions in geological samples reported, followed by the first in quartzite from Bastar Craton of India. The H₂S₂ was likely in situ enclosed by the host rubies rather than a reaction product that formed during the cooling of H₂S and S₈, suggesting sulfanes are stable at elevated temperatures (e.g., >600 °C). …”
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Pedological formations on old mountain geomorphological surfaces of central Spain by Raimundo Jiménez-Ballesta, Sandra Bravo, Caridad Pérez-de-los-Reyes, Jose A. Amorós, Jaime Villena, Francisco J. García-Navarro

“…The genetic and geographic features of Alfisols, Ultisols and Inceptisols are closely related to the nature of their parent materials, based on quartzite and quartz conglomerates, sometimes with an arkosic matrix, red shale, polygenic gravels and pebbles. …”
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A Case Study on Distribution of Gemstone in Bela Ophiolite, District Khuzdar, Balochistan by Salman Khan, Abdul Ghaffar, Inayat Ullah, Fida Murad, Jalil Ahmad, Muhammad Ishaq Kakar

“…In metamorphic sole rocks of Bela Ophiolite in the Sonaro area, marble and quartzite are associated with the metamorphic rocks such as greenschist and amphibolite facies that are formed during the e volution period of the ophiolite. …”
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Research progress of the ultrahigh-temperature granulites in the Rauer Group, East Antarctica by TONG Laixi, LIU Zhao, WANG Yanbin

“…The Archaean orthogneisses contain Mg-Al-rich sapphirine-bearing ultrahigh-temperature (UHT) pelitic granulite associations (Mather Paragneiss associations), and they consist mainly of sapphirine-bearing pelitic granulite, Mg-rich garnet-sillimanite-bearing pelitic paragneiss, orthopyroxene-sillimanite quartzite, garnet-bearing mafic granulite and calcsilicate granulite that experienced ultrahigh-temperature metamorphism. …”
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Field Observations and Geophysical Research Applied to the Detection of Manganese (Mn) Deposits in the Eastern Part of Oban Massif, South-Eastern Nigeria: An Integrated Approach by Emmanuel E. Okon, Ebenezer A. Kudamnya, Kehinde D. Oyeyemi, Benjamin O. Omang, Omotayo Ojo, Mohamed Metwaly

“…The geological investigation revealed a dominant variety of metamorphic rock types, including migmatitic (banded) gneisses hornblende granite gneisses, amphibolites, charnockites, and some quartzite ridges. Also present are some indications of pockets of dolerites. …”
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Specific composition features of Kodinka Formation mudstones (Upper Devonian, the Middle Urals eastern slope) by Yu. Melnichuk Oleg, D. Ryanskaya Anastasiya

“…There were some diverse rock massifs in source area, including cherts, igneous (mafic, intermediate, felsic), metamorphic (quartzite, serpentine rock and shale) units. Source rocks undergone weathering at intermediate semi-arid/semi-humid climate conditions and passive tectonic regime. …”
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