Afwillite R141097

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Record 6 of 472  


Name: Afwillite
RRUFF ID: R141097
Ideal Chemistry: Ca3[SiO4][SiO2(OH)2]·2H2O
Locality: Caspar quarry, Bellerberg volcano, Mayen, Eifel, Germany
Source: Ch. and H. Schäfer [view label]
Owner: RRUFF
Description: Spherical aggregate of radiating colorless crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Spurrite-Afwillite (6) ]
Quick search: [ All Afwillite samples (3) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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RRUFF ID: R141097
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 40% of 150mW
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Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R141097.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 16.262(5)Å    b: 5.630(2)Å    c: 13.230(3)Å
alpha: 90°    beta: 134.90(1)°    gamma: 90°   Volume: 858.0(1)Å3    Crystal System: monoclinic
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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 Afwillite

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]

Foshag W F (1925) New minerals: new species, American Mineralogist, 10, 447-448   [view file]

Parry J, Wright F E (1925) Afwillite, a new hydrous calcium silicate, from Dutoitspan mine, Kimberley, South Africa, Mineralogical Magazine, 20, 277-285   [view file]

Woodford A O, Crippen R A, Garner K B (1941) Section across Commercial Quarry, Crestmore, California, American Mineralogist, 26, 351-381   [view file]

Megaw H D (1952) The structure of afwillite, Ca3(SiO3OH)2·2H2O, Acta Crystallographica, 5, 477-491

Switzer G, Bailey E H (1953) Afwillite from Crestmore, California, American Mineralogist, 38, 629-633   [view file]

Malik K M A, Jeffery J W (1976) A reinvestigation of the structure of afwillite, Acta Crystallographica, B32, 475-480

Shannon R D, Shannon R C, Medenbach O, Fischer R X (2002) Refractive index and dispersion of fluorides and oxides, Journal of Physical and Chemical Reference Data, 31, 931-970   [view file]

Rastsvetaeva R K, Chukanov N V, Zadov A E (2009) Refined structure of afwillite from the northern Baikal region, Crystallography Reports, 54, 418-422