Information om | Engelska ordet CRISTOBALITE

Exempel på hur man kan använda CRISTOBALITE i en mening

• Both quartz and cristobalite are polymorphs with all the members of the quartz group, which also include coesite, tridymite and stishovite.
• It also occurs in the Earth's crust, in association with clinopyroxene, plagioclase, ilmenite, cristobalite, tridymite, fayalite, fluorapatite and potassic feldspar, and forms series with pyroxmangite.
• Important ones include: α-quartz, β-quartz, tridymite, cristobalite, moganite, coesite, and stishovite.
• The primary minerals identified in Lunar regolith are plagioclase, olivine, augite, orthopyroxene, pigeonite, ilmenite, chromite, quartz, cristobalite, and whitlockite.
• Dunting also occurs in wares produced from montmorillonite clay bodies due to the volume expansion of cristobalite during its inversion upon cooling.
• Other phases often identified are cristobalite, anhydrite, free lime, periclase, calcite, sylvite, halite, portlandite, rutile and anatase.
• Rigid unit modes (RUMs) represent a class of lattice vibrations or phonons that exist in network materials such as quartz, cristobalite or zirconium tungstate.
• Other minerals including cristobalite, arcanite, thenardite, baryte and native gold have been collected from the fumaroles of this volcano.
• The thermal process engineering range includes sectional coolers, moving bed coolers, recuperative multi-tube coolers and plants for the production of sodium triphosphate, calcined petroleum coke and cristobalite.
• Veining can be reduced or avoided by the use of more refractory non-silica sands (zircon, chromite etc); by flux additives which lower the temperature of silica transition to tridymite or cristobalite, or which sinter the sand increasing resistance to failure; or by organic additives which are decomposed to carbon at high temperature, which then bonds to silica increasing strength, imparting veining resistance.
• Of the silicate minerals, the typical ones are especially cordierite, indialite, fayalite, mullite, tridymite and cristobalite (both tridymite and cristobalite may be classified as oxide minerals, too), and sekaninaite.
• On Mussel Ridge, hydrothermal alteration of rocks has produced several minerals like alunite, amorphous silica, anhydrite, barite, chalcopyrite, cristobalite, magnetite, marcasite, natroalunite, natrojarosite, pyrite, pyrophyllite, smectite, and native sulfur; in some places, the volcanic rocks have been entirely replaced by alteration products.
• The type locality, in the Cerro de San Cristóbal de Pachuca geosite, of tridymite and cristobalite, minerals discovered by Gerhard vom Rath in the years 1868 and 1887, respectively.
• Hydrothermal alteration by hydrothermal waters and the condensation of sulfuric acid has yielded aluminite, alunite, anhydrite, chlorite, cristobalite, diaspore, gibbsite, hematite, kaolinite, metahalloysite, natroalunite, pyrite, quartz and smectite, with chlorite, diaspore, natroalunite and sulfur being the most common.

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