----- R170037 - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

Gahnite R170037

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

RRUFF ID:	R170037.2
Sample Description:	Microprobe Fragment
Measured Chemistry:	(Zn_0.57Fe_0.22Mg_0.21Mn_0.02)(Al_1.94Fe_0.06)O₄
Microprobe Data File:	[ Download Excel File ]

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented sample

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To download sample data,
please select a specific
orientation angle.

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R170037

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

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	Raman Data (Processed)
	RRUFF File

POWDER DIFFRACTION

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
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]
von Moll C E F (1807) Uebersicht. Gahnit, aus Fahlun, Efemeriden der Berg- und Huttenkunde, 3, 75-92 [view file]
Saalfeld H (1964) Strukturdaten von gahnit, ZnAl₂O₄, Zeitschrift für Kristallographie, 120, 476-478 [view file]
Spry P G (1982) An unusual gahnite–forming reaction, Geco base–metal deposit, Manitouwadge, Ontario, The Canadian Mineralogist, 20, 549-553 [view file]
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]
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]
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]
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
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]
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]
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]
Popović J, Tkalčec E, Gržeta B, Kurajica S, Rakvin B (2009) Inverse spinel structure of Co-doped gahnite, American Mineralogist, 94, 771-776 [view file]
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]
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
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]
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
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
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
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
Bosi F, Biagioni C, Pasero M (2019) Nomenclature and classification of the spinel supergroup, European Journal of Mineralogy, 31, 183-192 [view file]
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

REFERENCES for Gahnite

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]

von Moll C E F (1807) Uebersicht. Gahnit, aus Fahlun, Efemeriden der Berg- und Huttenkunde, 3, 75-92 [view file]

Saalfeld H (1964) Strukturdaten von gahnit, ZnAl₂O₄, Zeitschrift für Kristallographie, 120, 476-478 [view file]

Spry P G (1982) An unusual gahnite–forming reaction, Geco base–metal deposit, Manitouwadge, Ontario, The Canadian Mineralogist, 20, 549-553 [view file]

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]

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]

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]

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

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]

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]

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]

Popović J, Tkalčec E, Gržeta B, Kurajica S, Rakvin B (2009) Inverse spinel structure of Co-doped gahnite, American Mineralogist, 94, 771-776 [view file]

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]

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

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]

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

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

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

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

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

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