Mullite R141103
Name: Mullite
RRUFF ID: R141103
Ideal Chemistry: Al4+2xSi2-2xO10-x (x ≈ 0.4)
Locality: Weinberg, Nickenich, Eifel, Germany
Source: Ch. and H. Schäfer [view label]
Owner: RRUFF
Description: White acicular crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Mullite samples (3) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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RRUFF ID: R141103
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Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R141103.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.552(6)Å    b: 7.666(5)Å    c: 2.876(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 166.5(1)Å3    Crystal System: orthorhombic
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Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Mullite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Bowen N L, Greig J W, Zies E G (1924) Mullite, a silicate of alumina, Journal of the Washington Academy of Sciences, 14, 183-191   [view file]

Foshag W F (1924) New minerals: new species, American Mineralogist, 9, 211-212   [view file]

Agrell S O, Smith J V (1957) X-ray crystallography of mullite, sillimanite and praguite, Acta Crystallographica, 10, 761-761

Durovic S (1962) A statistical model for the crystal structure of mullite, Soviet Physics - Crystallography, 7, 271-278   [view file]

Kahn-Harari A, Abolhassani S, Michel D, Mazerolles L, Portier R, Perez-Ramirez J G (1991) Observation of ordering in silicon and germanium mullites, Journal of Solid State Chemistry, 90, 234-248

Niven M L, Waters D J, Moore J M (1991) The crystal structure of werdingite, (Mg,Fe)2Al12(Al,Fe)2Si4(B,Al)4O37, and its relationship to sillimanite, mullite, and grandidierite, American Mineralogist, 76, 246-256   [view file]

Voll D, Lengauer C, Beran A, Schneider H (2001) Infrared band assignment and structural refinement of Al-Si, Al-Ge, and Ga-Ge mullites, European Journal of Mineralogy, 13, 591-604

Popović J, Tkalcec E, Gržeta B, Kurajica S, Schmauch J (2007) Cobalt incorporation in mullite, American Mineralogist, 92, 408-411   [view file]

Fischer R X, Tikhonova V, Birkenstock J, Fischer L A, Herrmann K, Mengel K, Schneider H (2015) A new mineral from the Bellerberg, Eifel, Germany, intermediate between mullite and sillimanite, American Mineralogist, 100, 1493-1501   [view file]

Bost N, Duraipandian S, Guimbretière G, Poirier J (2016) Raman spectra of synthetic and natural mullite, Vibrational Spectroscopy, 82, 50-52

Igami Y, Ohi S, Kogiso T, Furukawa N, Miyake A (2019) High-temperature structural change and microtexture formation of sillimanite and its phase relation with mullite, American Mineralogist, 104, 1051-1061

Lenz S, Birkenstock J, Fischer L A, Schüller W, Schneider H, Fischer R X (2019) Natural mullites: chemical composition, crystal structure, and optical properties, European Journal of Mineralogy, 31, 353-367

Lenz F, Birkenstock J, Fischer L A, Schneider H, Fischer R X (2020) Mullite-2c – a natural polytype of mullite, European Journal of Mineralogy, 32, 235-249   [view file]