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Silica

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About SilicaHide

Silica is the trivial name for the chemical compound silicon dioxide, SiO2. The term silica comprises all polymorphs of silicon dioxide. In geoscience literature, the term silica also includes silicic acid, H4SiO4, which forms when silica polymorphs and silicate minerals are dissolved in water.

Two groups of silica polymorphs can be distinguished by their molecular structure:
1. Polymorphs that are made of SiO4 tetrahedra: α-quartz, β-quartz, moganite, α-tridymite, β-tridymite, α-cristobalite, β-cristobalite, keatite, coesite and silica glass (lechatelierite) are pure silica polymorphs. Opal-AG, opal-AN, opal-C, opal-CT, melanophlogite and chibaite are silica polymorphs that contain impurities. Structurally, all these polymorphs are network silicates.
2. High-pressure polymorphs in which each silicon atom is surrounded by six oxygen atoms: stishovite and seiferite. Since these polymorphs are not made of SiO4 tetrahedra, they are not structurally related to silicates.



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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000816CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319810293
0000817CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319810293
0000818CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319812.18293
0000819CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319813.15293
0000820CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319813.87293
0000821CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319814.6293
0000822CoesiteLevien L, Prewitt C T (1981) High-pressure crystal structure and compressibility of coesite American Mineralogist 66 324-33319815.19293
0004264CoesiteIkuta D, Kawame N, Banno S, Hirajima T, Ito K, Rakovan J F, Downs R T, Tamada O (2007) First in situ X-ray diffraction identification of coesite and retrograde quartz on a glass thin section of an ultrahigh-pressure metamorphic rock and their crystal structure details American Mineralogist 92 57-632007Yangkou meta-igneous complex in the middle part of the Sulu UHP terrain, eastern China0293
0008746CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620030.0001293
0008747CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620030.0001293
0008748CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620032.248293
0008749CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620032.84293
0008750CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620033.763293
0008751CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620034.45293
0008752CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620035.01293
0008753CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620036.16293
0008754CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620036.509293
0008755CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620037.814293
0008756CoesiteAngel R J, Shaw C S J, Gibbs G V (2003) Compression mechanisms of coesite Physics and Chemistry of Minerals 30 167-17620038.68293
0010692CoesiteAraki T, Zoltai T (1969) Refinement of a coesite structure Zeitschrift fur Kristallographie 129 381-3871969synthetic0293
0010809CoesiteKirfe A, Will G, Arndt J (1979) A new phase of coesite SiO2 it is not really a new phase Zeitschrift fur Kristallographie 149 315-32619790293
0010855CoesiteSasaki S, Chen H K, Prewitt C T, Nakajima Y (1983) Re-examination of "P2_1/a coesite" Zeitschrift fur Kristallographie 164 67-771983synthetic0293
0001629CristobaliteDowns R T, Palmer D C (1994) The pressure behavior of alpha cristobalite American Mineralogist 79 9-141994Ellora Caves, India0293
0001630CristobaliteDowns R T, Palmer D C (1994) The pressure behavior of alpha cristobalite American Mineralogist 79 9-141994Ellora Caves, India0.19293
0001631CristobaliteDowns R T, Palmer D C (1994) The pressure behavior of alpha cristobalite American Mineralogist 79 9-141994Ellora Caves, India0.73293
0001632CristobaliteDowns R T, Palmer D C (1994) The pressure behavior of alpha cristobalite American Mineralogist 79 9-141994Ellora Caves, India1.05293
0020170CristobaliteMatsui M, Sato T, Funamori N (2014) Crystal structures and stabilities of cristobalite-helium phases at high pressures American Mineralogist 99 184-1892014calculated structure10293
0020171CristobaliteMatsui M, Sato T, Funamori N (2014) Crystal structures and stabilities of cristobalite-helium phases at high pressures American Mineralogist 99 184-1892014calculated structure4293
0018342CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India0.2293
0018343CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India0.6293
0018344CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India3.6293
0018345CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India5.4293
0018346CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India7.3293
0018347CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India9.1293
0018348CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-52920113.5293
0018349CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Note z-coordinate of O2 is corrected Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India4.9293
0018350CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India7.4293
0018351CristobaliteDera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T (2011) New insights into the high-pressure polymorphism of SiO2 cristobalite Physics and Chemistry of Minerals 38 517-5292011Ellora Caves, India10.1293
0020745CristobaliteLee S, Xu H (2019) Using powder XRD and pair distribution function to determine anisotropic atomic displacement parameters of orthorhombic tridymite and tetragonal cristobalite Acta Crystallographica B75 https://doi.org/10.1107/S20525206190009332019rhyolitic rock, New Mexico, USA0293
0017665CristobaliteWyckoff R (1925) Die Kristallstruktur von $-beta-Crystobalit Si O2 (bei hohen Temperaturen stabile Form). _cod_database_code 1010944 Zeitschrift fur Kristallographie 62 189-20019250293
0017659CristobaliteNieuwenkamp W (1935) Die Kristallstruktur des Tief-Cristobalits Si O2 _cod_database_code 1010938 Zeitschrift fur Kristallographie 92 82-8819350293
0010623CristobaliteDollase W A (1965) Reinvestigation of the structure of low cristobalite Zeitschrift fur Kristallographie 121 369-3771965Ellora, Hyderabad, India0293
0010747CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010748CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010749CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010750CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010751CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010752CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010753CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010754CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010755CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010756CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0010757CristobalitePeacor D R (1973) High-temperature single-crystal study of the cristobalite inversion Zeitschrift fur Kristallographie 138 274-2981973Ellora Caves, Hyderabad State, India0293
0017674CristobaliteWyckoff R (1925) The crystal structure of the high temperature form of Cristobalite (SiO2) _cod_database_code 1010954 American Journal of Science 9 448-45919250293
0017646CristobaliteBarth T (1932) The Cristobalite Structures. I. High-Cristobalite _cod_database_code 1010921 American Journal of Science 23 350-35619320293
0012928CristobalitePluth J J, Smith J V, Faber J (1985) Crystal structure of low cristobalite at 10, 293, and 473 K: Variation of framework geometry with temperature Journal of Applied Physics 57 1045-10491985synthetic0293
0012929CristobalitePluth J J, Smith J V, Faber J (1985) Crystal structure of low cristobalite at 10, 293, and 473 K: Variation of framework geometry with temperature Journal of Applied Physics 57 1045-10491985synthetic0293
0012930CristobalitePluth J J, Smith J V, Faber J (1985) Crystal structure of low cristobalite at 10, 293, and 473 K: Variation of framework geometry with temperature Journal of Applied Physics 57 1045-10491985synthetic0293
0020708CristobaliteLe Bail A (1995) Modelling the silica glass structure by the Rietveld method Journal of Non-Crystalline Solids 183 39-4219950293
0018754CristobaliteGibbs G V, Boisen M B, Downs R T, Lasaga A C (1988) Mathematical Modeling of the structures and bulk moduli of TX2 quartz Materials Research Society Symposia Proceedings 121 155-1651988theoretical0293
0014541CristobaliteDove M T, Craig M S, Keen D A, Marshall W G, Redfern S A T, Trachenko K O, Tucker M G (2000) Crystal structure of the high-pressure monoclinic phase-II of cristobalite, SiO2 Mineralogical Magazine 64 569-5762000synthetic3.5293
0014542CristobaliteDove M T, Craig M S, Keen D A, Marshall W G, Redfern S A T, Trachenko K O, Tucker M G (2000) Crystal structure of the high-pressure monoclinic phase-II of cristobalite, SiO2 Mineralogical Magazine 64 569-5762000synthetic3.5293
0000789QuartzLevien L, Prewitt C T, Weidner D J (1980) Structure and elastic properties of quartz at pressure American Mineralogist 65 920-93019800293
0000790QuartzLevien L, Prewitt C T, Weidner D J (1980) Structure and elastic properties of quartz at pressure American Mineralogist 65 920-93019802.07293
0000791QuartzLevien L, Prewitt C T, Weidner D J (1980) Structure and elastic properties of quartz at pressure American Mineralogist 65 920-93019803.76293
0000792QuartzLevien L, Prewitt C T, Weidner D J (1980) Structure and elastic properties of quartz at pressure American Mineralogist 65 920-93019804.86293
0000793QuartzLevien L, Prewitt C T, Weidner D J (1980) Structure and elastic properties of quartz at pressure American Mineralogist 65 920-93019805.58293
0000794QuartzLevien L, Prewitt C T, Weidner D J (1980) Structure and elastic properties of quartz at pressure American Mineralogist 65 920-93019806.14293
0004265QuartzIkuta D, Kawame N, Banno S, Hirajima T, Ito K, Rakovan J F, Downs R T, Tamada O (2007) First in situ X-ray diffraction identification of coesite and retrograde quartz on a glass thin section of an ultrahigh-pressure metamorphic rock and their crystal structure details American Mineralogist 92 57-632007Yangkou meta-igneous complex in the middle part of the Sulu UHP terrain, eastern China0293
0004266QuartzIkuta D, Kawame N, Banno S, Hirajima T, Ito K, Rakovan J F, Downs R T, Tamada O (2007) First in situ X-ray diffraction identification of coesite and retrograde quartz on a glass thin section of an ultrahigh-pressure metamorphic rock and their crystal structure details American Mineralogist 92 57-632007Oomine granite, Tenkawa-mura, Nara, Southwest Japan0293
0004267QuartzIkuta D, Kawame N, Banno S, Hirajima T, Ito K, Rakovan J F, Downs R T, Tamada O (2007) First in situ X-ray diffraction identification of coesite and retrograde quartz on a glass thin section of an ultrahigh-pressure metamorphic rock and their crystal structure details American Mineralogist 92 57-632007Oomine granite, Tenkawa-mura, Nara, Southwest Japan0293
0006212QuartzAntao S M, Hassan I, Wang J, Lee P L, Toby B H (2008) State-of-the-art high-resolution powder x-ray diffraction (HRPXRD) illustrated with Rietveld structure refinement of quartz, sodalite, tremolite, and meionite The Canadian Mineralogist 46 1501-15092008not specified0293
0006362QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900298
0006363QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900398
0006364QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900498
0006365QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900597
0006366QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900697
0006367QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900773
0006368QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900813
0006369QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900838
0006370QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900848
0006371QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900854
0006372QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900859
0006373QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900869
0006374QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900891
0006375QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900920
0006376QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-7719900972
0006377QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-77199001012
0006378QuartzKihara K (1990) An X-ray study of the temperature dependence of the quartz structure European Journal of Mineralogy 2 63-77199001078
0008971QuartzRosa A L, El-Barbary A A, Heggie M I, Briddon P R (2005) Structural and thermodynamic properties of water related defects in alpha-quartz Physics and Chemistry of Minerals 32 323-33120050293
0018071QuartzWyckoff R (1926) Kriterien fur hexagonale Raumgruppen und die Kristallstruktur von beta Quarz. _cod_database_code 1011200 Zeitschrift fur Kristallographie 63 507-53719260293
0017992QuartzWei (1935) Die Bindung im Quarz _cod_database_code 1011097 Zeitschrift fur Kristallographie 92 355-36219350293
0010604QuartzArnold H (1962) Die struktur des hochquarzes Zeitschrift fur Kristallographie 117 467-46919620293
0010605QuartzArnold H (1962) Die struktur des hochquarzes Zeitschrift fur Kristallographie 117 467-46919620293
0011007QuartzGlinnemann J, King H E, Schulz H, Hahn T, La Placa S J, Dacol F (1992) Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure Zeitschrift fur Kristallographie 198 177-21219920293
0011008QuartzGlinnemann J, King H E, Schulz H, Hahn T, La Placa S J, Dacol F (1992) Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure Zeitschrift fur Kristallographie 198 177-21219924293
0011009QuartzGlinnemann J, King H E, Schulz H, Hahn T, La Placa S J, Dacol F (1992) Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure Zeitschrift fur Kristallographie 198 177-21219927.2293
0011010QuartzGlinnemann J, King H E, Schulz H, Hahn T, La Placa S J, Dacol F (1992) Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure Zeitschrift fur Kristallographie 198 177-212199210.2293
0012866QuartzGualtieri A F (2000) Accuracy of XRPD QPA using the combined Rietveld-RIR method Journal of Applied Crystallography 33 267-2782000Baveno, Novara, Italy0293
0018749QuartzGibbs G V, Boisen M B, Downs R T, Lasaga A C (1988) Mathematical Modeling of the structures and bulk moduli of TX2 quartz Materials Research Society Symposia Proceedings 121 155-1651988theoretical0293
0018049QuartzBrill R, Hermann C, Peters C (1939) Studien ueber chemische Bindung mittels Fourieranalyse III. Die Bindung im Quarz _cod_database_code 1011172 Naturwissenschaften 27 676-67719390293
0015462QuartzHazen R M, Finger L W, Hemley R J, Mao H K (1989) High-pressure crystal chemistry and amorphization of alpha-quartz Solid State Communications 72 507-5111989synthetic0293
0015463QuartzHazen R M, Finger L W, Hemley R J, Mao H K (1989) High-pressure crystal chemistry and amorphization of alpha-quartz Solid State Communications 72 507-5111989synthetic2293
0015464QuartzHazen R M, Finger L W, Hemley R J, Mao H K (1989) High-pressure crystal chemistry and amorphization of alpha-quartz Solid State Communications 72 507-5111989synthetic5.1293
0015465QuartzHazen R M, Finger L W, Hemley R J, Mao H K (1989) High-pressure crystal chemistry and amorphization of alpha-quartz Solid State Communications 72 507-5111989synthetic8293
0015466QuartzHazen R M, Finger L W, Hemley R J, Mao H K (1989) High-pressure crystal chemistry and amorphization of alpha-quartz Solid State Communications 72 507-5111989synthetic9.5293
0015467QuartzHazen R M, Finger L W, Hemley R J, Mao H K (1989) High-pressure crystal chemistry and amorphization of alpha-quartz Solid State Communications 72 507-5111989synthetic12.5293
0000531TridymiteDollase W A, Baur W H (1976) The superstructure of meteoritic low tridymite solved by computer simulation American Mineralogist 61 971-9781976Steinbach meteorite, Saxony, Germany0293
0006615TridymiteGraetsch H, Topalovic-Dierdorf I (1996) 29Si MAS NMR spectrum and superstructure of modulated tridymite L3-To(MX-1) European Journal of Mineralogy 8 103-1131996synthetic0293
0006616TridymiteGraetsch H, Topalovic-Dierdorf I (1996) 29Si MAS NMR spectrum and superstructure of modulated tridymite L3-To(MX-1) European Journal of Mineralogy 8 103-1131996synthetic0293
0008552TridymiteGraetsch H (2001) X-ray powder diffraction study on the modulated high temperature forms of SiO2 tridymite between 110 and 220 C Physics and Chemistry of Minerals 28 313-3212001synthetic0293
0008553TridymiteGraetsch H (2001) X-ray powder diffraction study on the modulated high temperature forms of SiO2 tridymite between 110 and 220 C Physics and Chemistry of Minerals 28 313-3212001synthetic0388
0020733TridymiteDollase W A (1967) The crystal structure at 220 C of orthothombic high tridymite from the Steinbach meteorite Acta Crystallographica 23 617-6231967Steinbach meteorite0293
0020734TridymiteKato V K, Nukui A (1976) Die kristallstruktur des monoklinen tief-tridymits Acta Crystallographica B32 2486-24911976synthetic0293
0009625TridymiteKonnert J H, Appleman D E (1978) The crystal structure of low tridymite Acta Crystallographica B34 391-4031978Plumas County, California, USA0293
0020744TridymiteLee S, Xu H (2019) Using powder XRD and pair distribution function to determine anisotropic atomic displacement parameters of orthorhombic tridymite and tetragonal cristobalite Acta Crystallographica B75 https://doi.org/10.1107/S20525206190009332019rhyolitic rock, New Mexico, USA0293
0013132TridymiteHirose T, Kihara K, Okuno M, Fujinami S, Shinoda K (2005) X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Journal of Mineralogical and Petrological Sciences 100 55-692005synthetic0298
0013133TridymiteHirose T, Kihara K, Okuno M, Fujinami S, Shinoda K (2005) X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Journal of Mineralogical and Petrological Sciences 100 55-692005synthetic0373
0013134TridymiteHirose T, Kihara K, Okuno M, Fujinami S, Shinoda K (2005) X-ray, DTA and Raman studies of monoclinic tridymite and its higher temperature orthorhombic modification with varying temperature. Journal of Mineralogical and Petrological Sciences 100 55-692005synthetic0413
CIF Raw Data - click here to close

Varieties of SilicaHide

Float-stoneA coarse, porous, friable variety of impure silica, comprised chiefly of the siliceous skeletons of infusoria.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Silica associated with HapkeiteFe2Si
1 photo of Silica associated with TroiliteFeS

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Silica in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

References for SilicaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sosman, R.B. (1927) The Properties of Silica. 856 pp., New York.
Rogers, Austin Flint (1928), Natural history of the silica minerals: American Mineralogist: 13: 73-92;
Cartz, L. (1964) An X-ray diffraction study of the structure of silica glass. Zeitschrift für Kristallographie: 120: 241-260.
Robinson, H.A. (1965) On the structure of vitreous SiO2. I. A new pentagonal dodecahedral model. Journal Phys. Chem. Solids: 26: 209-222.
Henninger, E.H., Buschert, R.C., and Heaton, L. (1967) Atomic structure and correlation in vitreous silica by x-ray and neutron diffraction. Journal Phys. Chem. Solids: 28: 423-432.
Hicks, J.F.G. (1967) Structure of silica glass. Scence: 155: 459-461.
Kushiro, I. (1969), The system forsterite-diopside-silica with and without water at high pressures: American Journal of Science: 267: 269-294.
Mozzi, R.L. and Warren, B.E (1969) The structure of vitreous silica. Journalm of Applied Crystallography: 2: 164-172.
Bell, R.J. and Dean, P. (1972) The structure of vitreous silica: validity of the random network theory. Phil. Magazine: 25: 1381-1398.
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