Synthesis characterisation and catalytic activity of sol-gel derived silica-mineral acids by Nordin, N. A. M., Hamzah, N., Adnan, N. F., Isahak, W. N. R. W., Yusof, M. Z. M., Salimon, J., Yarmo, M. A.

Mineralogy, Geochemistry and Genesis of Agate—A Review by Jens Götze, Robert Möckel, Yuanming Pan

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Mineralogy, Geochemistry, and Genesis of Agates from Chihuahua, Northern Mexico by Maximilian Mrozik, Jens Götze, Yuanming Pan, Robert Möckel

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A Review: Analysis of Metal and Mineral Content in the Complexity of Sidoarjo Hot Mud as a Source of Renewable Energy in Indonesia by Deni Ainur ROKHİM, Kafita Krisnatul ISLAMİYAH, Eli Hendrik SANJAY

“…The hot mud samples of Lusi Island produced potential difference of 4.38 V and electric power of 3.5196 watts/hour (3 circuits); 5.84 V and 4.6928 watts/hour (4 circuits). The silica mineral in the center of the eruption was 45.0% (radius 500 m), 45.3% (radius 1000 m), and 43.3% (radius 2000 m), while on Lusi Island it was 43.8%. …”

Low-Crystallinity Index Chalcedony from Longhua, China: Characteristics and Formation by Qiuli Yan, Guanghai Shi

“…This chalcedony is interpreted as an intermediate transitional type from normal chalcedony to opal, shedding new light on understanding microcrystalline silica mineral aggregate and exploration for a similar gem deposit.…”
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Mineralogy and Geochemistry of Agates from Paleoproterozoic Volcanic Rocks of the Karelian Craton, Southeast Fennoscandia (Russia) by Evgeniya N. Svetova, Sergei A. Svetov

“…Agate mineralization is represented by silicates, oxides, and hydroxides, carbonates, phosphates, sulfides, and sulfates. Among the silica minerals in agates only chalcedony, quartz and quartzine were found. …”
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Hydrogen partitioning between stishovite and hydrous phase δ: implications for water cycle and distribution in the lower mantle by Takayuki Ishii, Giacomo Criniti, Narangoo Purevjav, Tomoo Katsura, Eiji Ohtani

“…Once hydrous phase δ becomes thermally unstable, alumina and water contents in silica minerals are increased by the chemical reaction between SiO2 and AlOOH, and aluminous silica minerals such as stishovite and CaCl2-type phase will be a main water carrier in the lower mantle. …”
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Opportunities given by density functional theory in pathological calcifications by Tielens, Frederik, Vekeman, Jelle, Bazin, Dominique, Daudon, Michel

“…Finally, a short outlook on silica mineralization will be presented as well.…”
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Silicification of Wood: An Overview by George E. Mustoe

“…The presence of specific silica minerals is commonly ascribed to diagenetic changes. …”
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Hydrochemistry of an aquifer in Quaternary loess like sediments in the Pampean Plain, Argentina by Daniel E. Martínez, Margarita Osterrieth

“…The dissolution of amorphous silica minerals, and subordinate silicate hydrolysis, are responsible of the characteristic high dissolved silica concentrations. …”
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Black Agates from Paleoproterozoic Pillow Lavas (Onega Basin, Karelian Craton, NW Russia): Mineralogy and Proposed Origin by Evgeniya N. Svetova, Svetlana Y. Chazhengina, Alexandra V. Stepanova, Sergei A. Svetov

“…The silica matrix of black agates is only composed of length-fast and zebraic chalcedony, micro- and macro-crystalline quartz, and quartzine. In addition to silica minerals, calcite, chlorite, feldspar, sulphides, and carbonaceous matter were also recognised. …”
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The genome of the reef-building glass sponge Aphrocallistes vastus provides insights into silica biomineralization by Warren R. Francis, Michael Eitel, Sergio Vargas, Catalina A. Garcia-Escudero, Nicola Conci, Fabian Deister, Jasmine L. Mah, Nadège Guiglielmoni, Stefan Krebs, Helmut Blum, Sally P. Leys, Gert Wörheide

“…Silicateins, suggested being involved in silica mineralization, especially in demosponges, were not found at all in the A. vastus genome and suggests that the underlying mechanisms of SiO2 deposition in the Silicea sensu stricto (Hexactinellida + Demospongiae) may not be homologous.…”
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Geological study and mining plan importance for mitigating alkali silica reaction in aggregate quarry operation by Murlidhar, B. R., Mohamad, E. T., Alel, M. N. A. B., Armaghani, D. J.

“…Alkali Silica reaction is slow chemical reaction in concrete due to reactive silica minerals in aggregates, alkalis in cement and moisture. …”
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Neogene Tree Trunk Fossils from the Meshgin Shahr Area, Northwest Iran by George E. Mustoe, Nasrollah Abbassi, Afsaneh Hosseini, Yousef Mahdizadeh

“…These silica polymorphs resulted from a combination of processes: silica minerals precipitated in multiple episodes under differing geochemical conditions and the diagenetic transformation of an opaline parent material.…”
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Mineralogy of Miocene Petrified Wood from Central Washington State, USA by George E. Mustoe, Thomas A. Dillhoff

“…At all of these localities, the mineralogy of fossil wood is diverse, with silica minerals that include opal-A, opal-CT, chalcedony, and macrocrystalline quartz. …”
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Mie scattering from optically levitated mixed sulfuric acid-silica core- shell aerosols: observation of core-shell morphology for atmospheric science by McGrory, MR, Shepherd, RH, King, MD, Grainger, RG, Et al.

“…Micron-sized silica aerosols (silica beads were used as a proxy for atmospheric silica minerals) were levitated in a mist of sulfuric acid particles; continuous collection of Mie spectra throughout the collision of sulfuric acid aerosols with the optically trapped silica aerosol demonstrated that the resulting aerosol particle had a core–shell morphology. …”

Mineral Liberation Studies Of Complex Gold Ore From Peranggih Prospect, Pahang by Muhammad, Amirul Asraf

“…Then mineral phase analysis has been done which content of silica minerals is the highest among the othermetallic mineral such as Arsenopyrite (FeAsS), Galena (PbS), and Hematite (Fe2O3) while the value for Quartz and others is about 84.0%. …”
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Characterization of Natural Consolidated Halloysite Nanotube Structures by Jiaqi Jin, Shoeleh Assemi, Hassnain Asgar, Greeshma Gadikota, Thang Tran, William Nguyen, John D. McLennan, Jan D. Miller

“…In this study of natural consolidated HNTs, the strength and hardness of these materials were found to be dependent on the presence of impurities (gibbsite, alunite, quartz, and other silica minerals), which accounted for the increased stability of such samples. …”
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Mineralogy and Geochemistry of the Paleocene–Eocene Palana Formation in Western Rajasthan, India: Insights for Sedimentary Paleoenvironmental Conditions and Volcanic Activity by Mohammed Hail Hakimi, Alok Kumar, Abdullah M. Alqubalee, Alok K. Singh, Mohammed Almobarky, Afikah Rahim, Mohammad Alqudah, Aref Lashin, Khairul Azlan Mustapha, Waqas Naseem

“…The presence of significant contents of zeolite derived from volcanic material together with silica minerals such as apophyllite and tridymite in most of the Palana organic-rich shales indicates a volcanic origin and supports hydrothermal activities during the Paleocene–Eocene period. …”
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Pongkor Reveals : Characterization of Late Tertiary Au-Ag Ephitermal Low Sulphidation Deposits by Hady, Muhammad Husein Mubarak, Aulia, Fahmi, Pratama, Arisa Wahyu

“…Based on XRD analysis, alteration that is present in the study area are phylic type (silica-chlorite-pyrite), propylitic type (chlorite-calcite-silica), and argillic type (kaolinit-ilit-smectite-chlorite-silica). Mineralization at Mount Pongkor has four stages infilling veins (Milesi, 1999), but in the study area only two stages of infilling are found, namely CQ facies and MOQ facies. …”
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