Phenakite R040046

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Record 1 of 4  

Name: Phenakite
RRUFF ID: R040046
Ideal Chemistry: Be2(SiO4)
Locality: San Miguel de Piracicaba, Minas Gerais, Brazil
Source: University of Arizona Mineral Museum 15677 [view label]
Owner: RRUFF
Description: Colorless crystal fragments
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Phenakite (8) ]
Quick search: [ All Phenakite samples (4) ]
CHEMISTRY 
RRUFF ID: R040046.2
Sample Description: Microprobe Fragment
Measured Chemistry: Be2.02Si0.99O4
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented, mounted onto a pin and polished
Pin ID: L00327
Orientation: Laser parallel to  c*  (0 0 1).     Fiducial mark perpendicular to laser is parallel to  a   [1 0 0].
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Raman Mode Analysis
Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R040046
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R040046.1
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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POWDER DIFFRACTION 
RRUFF ID: R040046.1
Sample Description: Powder
Cell Refinement Output: a: 12.4710(2)Å    b: 12.4710(2)Å    c: 8.2510(2)Å
alpha: 90.°    beta: 90.°    gamma: 120.°   Volume: 1111.33(3)Å3    Crystal System: hexagonal
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Phenakite

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]

Nordenskjöld N (1834) Beskrifning på phenakit, ett nytt mineral från Ural, Kongliga Svenska Vetenskaps-Akademiens Handlingar, 1833, 160-165   [view file]

Zachariasen W H (1971) Refined crystal structure of phenacite, Be2SiO4, Soviet Physics - Crystallography, 16, 1021-1025   [view file]

Hazen R M, Au A Y (1986) High-pressure crystal chemistry of phenakite (Be2SiO4) and bertrandite (Be4Si2O7(OH)2), Physics and Chemistry of Minerals, 13, 69-78

Downs J W, Gibbs G V (1987) An exploratory examination of the electron density and electrostatic potential of phenakite, American Mineralogist, 72, 769-777   [view file]

Hofmeister A M, Hoering T C, Virgo D (1987) Vibrational spectroscopy of of beryllium aluminosilicates: heat capacity calculations from band assignments, Physics and Chemistry of Minerals, 14, 205-224

Tsirel'son V G, Sokolova Y V, Urusov V S (1987) An X-ray diffraction study of the electron-density distribution and electrostatic potential in phenakite Be2SiO4, Geochemistry International, 24, 101-110   [view file]

Martin-Izard A, Paniagua A, Moreiras D, Acevedo R D, Marcos-Pascual C (1995) Metasomatism at a granitic pegmatite - dunite contact in Galicia: the Franqueira occurrence of chrysoberyl (alexandrite), emerald, and phenakite, The Canadian Mineralogist, 33, 775-792   [view file]

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]