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Name: Tridymite RRUFF ID: R090042 Ideal Chemistry: SiO2 Locality: The Fukang Pallasite meteorite, Gobi Desert, China, found in 2001 Source: Dante Lauretta Owner: RRUFF Description: Colorless micro-crystal, as an inclusion in olivine. Masami Kanzaki (Okayama University) suggests this is polytype tridymite MC. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
Mineral Group: [ Tridymite (7) ] | ||
Quick search: [ All Tridymite samples (4) ] |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R090042.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 25.938(5)Å b: 5.0150(9)Å c: 18.547(3)Å alpha: 90° beta: 117.680(9)° gamma: 90° Volume: 2136(1)Å3 Crystal System: monoclinic |
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REFERENCES for Tridymite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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Kawai K, Matsumoto T, Kihara K, Sakurai K (1978) The first finding of monoclinic tridymite in terrestrial volcanic rocks, Mineralogical Journal, 9, 231-235 [view file] |
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Kihara K (1978) Thermal change in unit-cell dimensions, and a hexagonal structure of tridymite, Zeitschrift für Kristallographie, 148, 237-253 [view file] |
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Hirose 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, 55-69 [view file] |
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Kanzaki M (2019) Raman spectra of tridymite modifications: MC, MX-1, and PO-10, Journal of Mineralogical and Petrological Sciences, 114, 214-218 [view file] |
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Lee 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, S2052520619000933 |
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