Ottrélite R060832

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Name: Ottrélite
RRUFF ID: R060832
Ideal Chemistry: Mn2+Al2O(SiO4)(OH)2
Locality: Ottre, Belgium
Source: Michael Scott S101006 [view label]
Owner: RRUFF
Description: Black pseudohexagonal flakes, triply twinned with a 120 deg rotation around c*
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Chloritoid (3) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060832
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R060832.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.504(3)Å    b: 9.531(4)Å    c: 9.112(4)Å
alpha: 90°    beta: 101.33(1)°    gamma: 90°   Volume: 468.7(3)Å3    Crystal System: monoclinic
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REFERENCES for Ottrélite

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]

Descloizeaux A, Damour A A (1842) De l'ottrélite, nouvelle espèce minérale, Annales des Mines, 2, 357-361   [view file]

Fransolet A M (1978) Données nouvelles sur l'ottrélite d'Ottré, belgique, Bulletin de Minéralogie, 101, 548-557