Eudidymite R060383



Name: Eudidymite
RRUFF ID: R060383
Ideal Chemistry: Na2Be2Si6O15·H2O
Locality: Mount Malosa, Zomba District, Malawi
Source: Herb Obodda 046 [view label]
Owner: RRUFF
Description: Colorless to tan micaceous book
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Eudidymite samples (2) ]
CHEMISTRY 
RRUFF ID: R060383.2
Sample Description: Microprobe fragment
Measured Chemistry: Na1.00Be1.00Si3.00O7(OH) ; Be not measured but estimated by stoichiometry.
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060383
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R060383.1
Sample Description: Powder
Cell Refinement Output: a: 12.617(2)Å    b: 7.3775(9)Å    c: 13.986(1)Å
alpha: 90.°    beta: 103.708(9)°    gamma: 90.°   Volume: 1264.8(2)Å3    Crystal System: monoclinic
  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 Eudidymite

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]

Brøgger W C (1887) Om “eudidymit”, et nyt norsk mineral, Nyt Magazin for Naturvidenskabena, Kristiana, 31, 196-199   [view file]

Brøgger W C (1890) Die mineralien der syenitpegmatitgänge der südnorwegischen augit- und nephelinsyenite. 64. Eudidymit, Zeitschrift für Kristallographie, 16, 586-597   [view file]

Nickel E H (1963) Eudidymite from Seal Lake, Labrador, Newfoundland, The Canadian Mineralogist, 7, 643-649   [view file]

Fang J H, Robinson P D, Ohya Y (1972) Redetermination of the crystal structure of eudidymite and its dimorphic relationship to epididymite, American Mineralogist, 57, 1345-1354   [view file]

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

Gatta G D, Rotiroti N, McIntyre G J, Guastoni A, Nestola F (2008) New insights into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal neutron diffraction study, American Mineralogist, 93, 1158-1165   [view file]