Magnesiochromite R060797

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Record 3 of 3  


Name: Magnesiochromite
RRUFF ID: R060797
Ideal Chemistry: MgCr3+2O4
Locality: Benbow mine, Stillwater Complex, Mount Wood area, Stillwater County, Montana, USA
Source: California Institute of Technology 11227 [view label]
Owner: RRUFF
Description: Black granular massive
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Magnesiochromite samples (3) ]
CHEMISTRY 
RRUFF ID: R060797.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mg0.55Fe2+0.45)Σ=1(Cr1.28Al0.58Fe3+0.14)Σ=2O4
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented and mounted on a pin.
Pin ID: M01281
Orientation: Laser parallel to  -a*  (-1 0 0).     Fiducial mark perpendicular to laser is parallel to  c   [0 0 1].
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060797
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: R060797.1
Sample Description: powder
Cell Refinement Output: a: 8.2940(3)Å    b: 8.2940(3)Å    c: 8.2940(3)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 570.54(6)    Crystal System: cubic
  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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Cell Refinement Data
Cell Refinement Output Data
DIF File
X-ray Data (XY - Processed)
RRUFF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Magnesiochromite

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]

Websky M (1873) Ueber Grochauit und Magnochromit, Zeitschrift der Deutschen Geologischen Gesellschaft, 25, 394-398   [view file]

Spencer L J (1913) A (sixth) list of new mineral names, Mineralogical Magazine, 16, 352-378   [view file]

Verwey E J W, Heilmann E L (1947) Physical properties and cation arrangement of oxides with spinel structures, Journal of Chemical Physics, 15, 174-180

Roeder P L (1994) Chromite: from the fiery rain of chondrules to the Kilauea Iki Lava Lake, The Canadian Mineralogist, 32, 729-746   [view file]

Klemme S, O'Neill H St C (1997) The reaction MgCr2O4 + SiO2 = Cr2O3 + MgSiO3 of formation of magnesiochromite (MgCr2O4), Contributions to Mineralogy and Petrology, 130, 59-65