Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

Galaxite R140320

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 1573 of 4216  


Name: Galaxite
RRUFF ID: R140320
Ideal Chemistry: Mn2+Al2O4
Locality: Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
Source: Lyle Gordon [view label]
Owner: RRUFF
Description: Dark red-brown granular crystals, associated with alleghanyite, psilomelane, and jacobsite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Spinel (66) ]
CHEMISTRY 
RRUFF ID: R140320.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mn0.94Mg0.06Co0.02)(Al1.61Fe3+0.38)O4
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R140320
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R140320.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 8.2716(12)Å    b: 8.2716(12)Å    c: 8.2716(12)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 565.94(4)Å3    Crystal System: cubic
DOWNLOADS:
X Min:    X Max:    X Sort:
REFERENCES for Galaxite

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]

Ross C S, Kerr P F (1932) The manganese minerals of a vein near Bald Knob, North Carolina, American Mineralogist, 17, 1-18   [view file]

Essene E J, Peacor D R (1983) Crystal chemistry and petrology of coexisting galaxite and jacobsite and other spinel solutions and solvi, American Mineralogist, 68, 449-455   [view file]

Lucchesi S, Russo U, Della Giusta A (1997) Crystal chemistry and cation distribution in some Mn-rich natural and synthetic spinels, European Journal of Mineralogy, 9, 31-42

Beard J S, Tracy R J (2002) Spinels and other oxides in Mn-rich rocks from the Hutter Mine, Pittsylvania County, Virginia, U.S.A.: implications for miscibility and solvus relations among jacobsite, galaxite, and magnetite, American Mineralogist, 87, 690-698   [view file]

Hålenius U, Bosi F, Skogby H (2007) Galaxite, MnAl2O4, a spectroscopic standard for tetrahedrally coordinated Mn2+ in oxygen-based mineral structures, American Mineralogist, 92, 1225-1231

Stokes T N, Bromiley G D, Diego Gatta G, Rotiroti N, Potts N J, Saunders K (2018) Cation distribution and valence in synthetic Al-Mn-O and Fe-Mn-O spinels under varying fO2 conditions, Mineralogical Magazine, 82, 975-992

Bosi F, Biagioni C, Pasero M (2019) Nomenclature and classification of the spinel supergroup, European Journal of Mineralogy, 31, 183-192   [view file]