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  • Tridymite - Wikipedia
    Tridymite is a high-temperature polymorph of silica and usually occurs as minute tabular white or colorless pseudo-hexagonal crystals, or scales, in cavities in felsic volcanic rocks Its chemical formula is Si O 2 Tridymite was first described in 1868 and the type location is in Hidalgo, Mexico
  • Tridymite: Mineral information, data and localities.
    Tridymite is a low pressure, mostly high-temperature-stable polymorph of silica that can also form or persist metastably at low temperatures
  • Tridymite | Silica polymorph, High-temperature form, Hexagonal crystals . . .
    Tridymite forms thin hexagonal plates that are generally twinned, often in groups of three; its name alludes to this habit It commonly occurs in igneous rocks, more abundantly than cristobalite, as in the trachytes of Rhineland-Palatinate, Germany; northern Italy; and in the Massif Central, France
  • 40 Facts About Tridymite
    Tridymite is a mineral made of silicon dioxide, just like quartz, but with a different crystal structure It's often found in volcanic rocks and can form at high temperatures
  • Tridymite: The mineral Tridymite information and pictures
    Detailed properties, locality information guide about the mineral tridymite (quartz polymorph)
  • Tridymite - an overview | ScienceDirect Topics
    Cristobalite and tridymite are polymorphs of SiO2 in which the silica tetrahedra are packed in a two-layer structure (tridymite) or a three-layer structure (cristobalite) (Drees et al , 1989)
  • Tridymite Mineral Data
    Comments: Clear, pseudohexagonal crystals of tridymite on matrix Location: Bellerberg quarry, Laacher See, Rhineland-Palatinate, Germany Scale: Not Given Colorless, White, Yellowish white, Gray Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments Platy - Sheet forms (e g micas)
  • Tridymite - Rock Identifier
    Tridymite is a high-temperature polymorph of silica and usually occurs as minute tabular white or colorless pseudo-hexagonal crystals, or scales, in cavities in felsic volcanic rocks Its chemical formula is SiO2 Tridymite was first described in 1868 and the type location is in Hidalgo, Mexico
  • C:\MdpWEB\T\Tridymite. PDF - Handbook of Mineralogy
    Polymorphism Series: Quartz, cristobalite, stishovite, and coesite are polymorphs; high tridymite is formed between 870 ±C and 1470 ±C; a number of stacking polytypes are known, especially non-terrestrial
  • Tridymite - Encyclopedia
    Tridymite is a common high-temperature phase of silica It has several polymorphs (stishovite, coesite, cristobalite, and especially quartz) The crystal system of tridymite is a complex subject because it changes with temperature, but often retains the forms acquired at high temperature





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