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Name: Afwillite RRUFF ID: R070296 Ideal Chemistry: Ca3[SiO4][SiO2(OH)2]·2H2O Locality: Hatrurim Formation, Negev Desert, West of Dead Sea, southern Israel Source: Michael Scott S100454 [view label] Owner: Michael Scott Description: Colorless bladed crystals, associated with yellow ettringite, R070208. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
Mineral Group: [ Spurrite-Afwillite (6) ] | ||
Quick search: [ All Afwillite samples (3) ] |
CHEMISTRY | ||||||||||
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RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R070296.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 16.25(1)Å b: 5.620(3)Å c: 13.209(7)Å alpha: 90° beta: 134.84(2)° gamma: 90° Volume: 855.5(7)Å3 Crystal System: monoclinic |
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REFERENCES for Afwillite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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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] |
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Foshag W F (1925) New minerals: new species, American Mineralogist, 10, 447-448 [view file] |
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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] |
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Woodford A O, Crippen R A, Garner K B (1941) Section across Commercial Quarry, Crestmore, California, American Mineralogist, 26, 351-381 [view file] |
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Megaw H D (1952) The structure of afwillite, Ca3(SiO3OH)2·2H2O, Acta Crystallographica, 5, 477-491 |
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Switzer G, Bailey E H (1953) Afwillite from Crestmore, California, American Mineralogist, 38, 629-633 [view file] |
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Malik K M A, Jeffery J W (1976) A reinvestigation of the structure of afwillite, Acta Crystallographica, B32, 475-480 |
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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] |
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Rastsvetaeva R K, Chukanov N V, Zadov A E (2009) Refined structure of afwillite from the northern Baikal region, Crystallography Reports, 54, 418-422 |
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