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Name: Gahnite RRUFF ID: R170037 Ideal Chemistry: ZnAl2O4 Locality: Silberberg mine, Bodenmais, Zwiesel, Bavarian Forest, Lower Bavaria, Bavaria, Germany Source: Rock Currier [view label] Owner: UAMM Description: Massive dark to bluish-green Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
Mineral Group: [ Spinel (66) ] | ||
Quick search: [ All Gahnite samples (4) ] |
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: | R170037.9 | ||||
Sample Description: | Single crystal, powder profile is calculated | ||||
Cell Refinement Output: |
a: 8.1142(10)Å b: 8.1142(10)Å c: 8.1142(10)Å alpha: 90° beta: 90° gamma: 90° Volume: 534.23(4)Å3 Crystal System: cubic |
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REFERENCES for Gahnite | |
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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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von Moll C E F (1807) Uebersicht. Gahnit, aus Fahlun, Efemeriden der Berg- und Huttenkunde, 3, 75-92 [view file] |
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Saalfeld H (1964) Strukturdaten von gahnit, ZnAl2O4, Zeitschrift für Kristallographie, 120, 476-478 [view file] |
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Spry P G (1982) An unusual gahniteforming reaction, Geco basemetal deposit, Manitouwadge, Ontario, The Canadian Mineralogist, 20, 549-553 [view file] |
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Hicks J A, Moore J M, Reid A M (1985) The co-occurrence of green and blue gahnite in the Namaqualand metamorphic complex, South Africa, The Canadian Mineralogist, 23, 535-542 [view file] |
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Parr J (1992) A gahnite-garnet retrograde reaction from the Pinnacles deposit, Broken Hill, New South Wales, Australia, The Canadian Mineralogist, 30, 145-152 [view file] |
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O'Neill H S C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from Powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4, Physics and Chemistry of Minerals, 20, 541-555 [view file] |
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Mendenbach O, Shannon R D (1997) Refractive indices and optical dispersion of 103 synthetic and mineral oxides and silicates measured by a small-prism technique, Journal of the Optical Society of America B, 14, 3299-3318 |
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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] |
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Heimann A, Spry P G, Teale G S (2005) Zincian spinel associated with metamorphosed proterozoic base-metal sulfide occurrences, Colorado: a re-evaluation of gahnite composition as a guide in exploration, The Canadian Mineralogist, 43, 601-622 [view file] |
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Reichmann H J, Jacobsen S D (2006) Sound velocities and elastic constants of ZnAl2O4 spinel and implications for spinel-elasticity systematics, American Mineralogist, 91, 1049-1054 [view file] |
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Popović J, Tkalčec E, Greta B, Kurajica S, Rakvin B (2009) Inverse spinel structure of Co-doped gahnite, American Mineralogist, 94, 771-776 [view file] |
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Ardit M, Cruciani G, Dondi M (2012) Structural relaxation in tetrahedrally coordinated Co2+ along the gahnite-Co-aluminate spinel solid solution, American Mineralogist, 97, 1394-1401 [view file] |
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D'Ippolito V, Andreozzi G B, Bosi F, Hålenius U, Mantovani L, Bersani D, Fregola R A (2013) Crystallographic and spectroscopic characterization of a natural Zn-rich spinel approaching the endmember gahnite (ZnAl2O4) composition, Mineralogical Magazine, 77, 2941-2953 |
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Medenbach O, Siritanon T, Subramanian M A, Shannon R D, Fischer R X, Rossman G R (2013) Refractive index and optical dispersion of In2O3, InBO3 and gahnite, Materials Research Bulletin, 48, 2240-2243 [view file] |
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Fregola R A, Skogby H, Bosi F, D'Ippolito V, Andreozzi G B, Hålenius U (2014) Optical absorption spectroscopy study of the causes for color variations in natural Fe-bearing gahnite: Insights from iron valency and site distribution data, American Mineralogist, 99, 2187-2195 |
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Hålenius U, Bosi F (2014) Color of Mn-bearing gahnite: A first example of electronic transitions in heterovalent exchange coupled IVMn2+-VIMn3+ pairs in minerals, American Mineralogist, 99, 261-266 |
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Heimann A, Yonts J A, Galliski M G (2015) The composition of gahnite in granitic pegmatites from the Pampean Pegmatite Province, Argentina: Implications for pegmatite fractionation, The Canadian Mineralogist, 53, 991-1013 |
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Faulstich F R L, Ávila C A, Neumann R, Silveira V S L, Callegario L S (2016) Gahnite from the São João del Rei pegmatitic province, Minas Gerais, Brazil: Chemical composition and genetic implications, The Canadian Mineralogist, 54, 1385-1402 |
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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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Wehrle E A, McDonald A M, Tinkham D K (2020) Mineral chemistry of gahnite from the Lalor metamorphosed VHMS deposit, Snow Lake, Manitoba, The Canadian Mineralogist, 58, 511-532 |
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