Brookite R050363

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Record 598 of 4144  

Name: Brookite
RRUFF ID: R050363
Ideal Chemistry: TiO2
Locality: Magnet Cove, Arkansas, USA
Source: University of Arizona Mineral Museum 10197 [view label]
Owner: RRUFF
Description: Black fragment of a prismatic crystal associated with quartz
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Brookite (3) ]
Quick search: [ All Brookite samples (3) ]
RRUFF ID: R050363.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Ti0.94Nb5+0.03Fe3+0.03)Σ=1O2
Microprobe Data File: [ Download Excel File ]
Sample Description: Sample is oriented and mounted on a pin
Pin ID: L00226
Orientation: Laser parallel to  -a*  (-1 0 0).     Fiducial mark perpendicular to laser is parallel to  b   [0 1 0].

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Direction of polarization of laser relative to fiducial mark:
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RRUFF ID: R050363
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050363.1
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
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RRUFF ID: R050363.1
Sample Description: Powder
Cell Refinement Output: a: 9.189(1)Å    b: 5.4580(9)Å    c: 5.1486(5)Å
alpha: 90.°    beta: 90.°    gamma: 90.°   Volume: 258.24(4)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.

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REFERENCES for Brookite

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]

Levy M (1825) An account of a new mineral, The Annals of Philosophy, 9, 140-142   [view file]

Pauling L, Sturdivant J H (1928) XV. the crystal structure of brookite, Zeitschrift für Kristallographie, 68, 239-256   [view file]

Meagher E P, Lager G A (1979) Polyhedral thermal expansion in the TiO2 polymorphs: refinement of the crystal structures of rutile and brookite at high temperature, The Canadian Mineralogist, 17, 77-85   [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]