Grandidierite R050196



Name: Grandidierite
RRUFF ID: R050196
Ideal Chemistry: MgAl3O2(BO3)(SiO4)
Locality: Madagascar
Source: Marcus Origlieri
Owner: RRUFF
Description: Aggregate of anhedral blue-green crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
CHEMISTRY 
RRUFF ID: R050196.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mg0.829Fe2+0.169Mn0.002)Al3(BO3)(SiO4)O2
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050196
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050196.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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RRUFF ID: R050196.1
Sample Description: Powder
Instrument settings: PIKE GladiATR - Far-IR on a Nicolet Magna 860 FTIR
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POWDER DIFFRACTION 
RRUFF ID: R050196.1
Sample Description: Powder
Cell Refinement Output: a: 10.3331(2)Å    b: 10.9861(4)Å    c: 5.7630(2)Å
alpha: 90.°    beta: 90.°    gamma: 90.°   Volume: 654.22(2)Å3    Crystal System: orthorhombic
  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 Grandidierite

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]

Lacroix A (1902) Note préliminaire sur une nouvelle espèce minérale, Bulletin de la Société Française de Minéralogie, 25, 85-86   [view file]

Stephenson D A, Moore P B (1968) The crystal structure of grandidierite, (Mg,Fe)Al3SiBO9, Acta Crystallographica, B24, 1518-1522

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]

Dzikowski T J, Groat L A, Grew E S (2007) The geometric effects of vFe2+ for vMg substitution on the crystal structures of the grandidierite-ominelite series, American Mineralogist, 92, 863-872   [view file]