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The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
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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 | ||||||||||
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RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||
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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 |
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DOWNLOADS:
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REFERENCES for Galaxite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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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] |
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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] |
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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] |
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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 |
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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] |
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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 |
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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 |
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Bosi F, Biagioni C, Pasero M (2019) Nomenclature and classification of the spinel supergroup, European Journal of Mineralogy, 31, 183-192 [view file] |
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