Gehlenite R061091

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Record 1532 of 4043  


Name: Gehlenite
RRUFF ID: R061091
Ideal Chemistry: Ca2Al(SiAl)O7
Locality: Carneal Plug, Glenoe Larne District, County Antrim, Northern Ireland
Source: Michael Scott S101599 [view label]
Owner: RRUFF
Description: Yellowish-brown anhedral blebs associated with black magnetite and white wollastonite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Melilite (6) ]
Quick search: [ All Gehlenite samples (3) ]
CHEMISTRY 
RRUFF ID: R061091.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Ca1.64Na0.36)Σ=2(Al0.38Fe0.36Mg0.26)Σ=1(Si1.98Al0.02)Σ=2O7
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented, polished and mounted on a pin.
Pin ID: M01135
Orientation: Laser parallel to  c*  (0 0 1).     Fiducial mark perpendicular to laser is parallel to  a   [1 0 0].
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Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R061091
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R061091.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.790(2)Å    b: 7.790(2)Å    c: 5.030(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 305.2(1)Å3    Crystal System: tetragonal
  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.

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REFERENCES for Gehlenite

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]

Fuchs J N (1815) Ueber den gehlenit, ein neues mineral aus Tirol, Journal für Chemie und Physik, 15, 377-386   [view file]

Wright F E (1908) Three contact minerals, American Journal of Science, 156, 545-554   [view file]

Louisnathan S J (1971) Refinement of the crystal structure of a natural gehlenite, Ca2Al(Al,Si)2O7, The Canadian Mineralogist, 10, 822-837   [view file]

Sharma S K, Simons B, Yoder H S (1983) Raman study of anorthite, calcium Tschermak's pyroxene, and gehlenite in crystalline and glassy states, American Mineralogist, 68, 1113-1125   [view file]

Sharma S K, Yoder H S, Matson D W (1988) Raman study of some melilites in crystalline and glassy states, Geochimica et Cosmochimica Acta, 52, 1961-1967

Swainson I P, Dove M T, Schmahl W W, Putnis A (1992) Neutron powder diffraction study of the akermanite-gehlenite solid solution series, Physics and Chemistry of Minerals, 19, 185-195

Marincea S, Bilal E, Verkaeren J, Pascal M L, Fonteilles M (2001) Superposed parageneses in the spurrite-, tilleyite- and gehlenite-bearing skarns from Cornet Hill, Apuseni Mountains, Romania, The Canadian Mineralogist, 39, 1435-1453   [view file]

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]

Gemmi M, Merlini M, Cruciani G, Artioli G (2007) Non-ideality and defectivity of the åkermanite-gehlenite solid solution: An X-ray diffraction and TEM study, American Mineralogist, 92, 1685-1694   [view file]

Merlini M, Gemmi M, Cruciani G, Artioli G (2008) High-temperature behaviour of melilite: in situ X-ray diffraction study of gehlenite-åkermanite-Na melilite solid solution, Physics and Chemistry of Minerals, 35, 147-155

Marincea Ş, Dumitraş D-G, Ghineț C, Fransolet A-M, Hatert F, Rondeaux M (2011) Gehlenite from three occurrences of high-temperature skarns, Romania: new mineralogical data, The Canadian Mineralogist, 49, 1001-1014   [view file]