) R061100 - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

Åkermanite R061100

Name: Åkermanite
RRUFF ID: R061100
Ideal Chemistry: Ca₂MgSi₂O₇
Locality: Lago de Vico, Viterbo, Italy
Source: Michael Scott S101600 [view label]
Owner: Michael Scott
Description: Colorless to white short prismatic crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis

Mineral Group: [ Melilite (7) ]

Quick search: [ All Åkermanite samples (2) ]

CHEMISTRY

RRUFF ID:	R061100.2
Sample Description:	Microprobe Fragment
Measured Chemistry:	(Ca_1.80Na_0.20)_Σ=2(Mg_0.58Al_0.38Fe_0.04)_Σ=1(Si_1.82Al_0.18)_Σ=2O₇
Microprobe Data File:	[ Download Excel File ]

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Sample is oriented and mounted on a pin.

Pin ID:

M00347

Orientation:

Laser parallel to c* (0 0 1). Fiducial mark perpendicular to laser is parallel to a [1 0 0].

DOWNLOADS:

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

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R061100

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

DOWNLOADS:

	Raman Data (RAW)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R061100.1

Sample Description:

Powder

Cell Refinement Output:

a: 7.7684(2)Å b: 7.7684(2)Å c: 5.0220(2)Å
alpha: 90° beta: 90° gamma: 90° Volume: 303.06(1)Å³ Crystal System: tetragonal

File Type Information

Calculated diffraction file.

File Type Information

Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

File Type Information

Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

DOWNLOADS:

	Cell Refinement Data
	Cell Refinement Output Data
	DIF File
	X-ray Data (XY - Processed)
	RRUFF File
	X-ray Data (XY - RAW)
	RRUFF File

REFERENCES for Åkermanite
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]
Vogt I H L (1884) Studier over slagger. I, Kongliga Svenska Vetenskaps-Akademiens Handlingar, 9, 3-302 [view file]
Vogt I H L (1890) Die Mineralien der Melilithgruppe - nämlich Gehlenit, Melilith und ein neues tetragonales, nicht Al₂O₃-führendes (Ca,Mg)O-Silikat (Åkermanit), nebst Zwischengliedern, Archiv for Mathematik og Naturvidenskab, 13, 310-402 [view file]
Mokeeva V, Makarov E (1979) Isomorph in melilites: refining of crystal structure of akermanite and intermediate melilite, Geokhimiya, 10, 1541-1544
Kimata M, Ii N (1981) The crystal structure of synthetic akermanite, Ca₂MgSi₂O₇, Neues Jahrbuch für Mineralogie, Monatshefte, 1981, 1-10
Hemingway B S, Evans H T, Nord G L, Haselton H T, Robie R A, McGee J J (1986) Åkermanite: phase transitions in heat capacity and thermal expansion, and revised thermodynamic data, The Canadian Mineralogist, 24, 425-434 [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
Shannon R D, Iishi K, Allik T H, Rossman G R, Liebertz J (1992) Dielectric constants of BaO and melilites and the oxide additivity rule, European Journal of Mineralogy, 4, 1241-1249
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
Kusaka K, Ohmasa M, Hagiya K, Iishi K, Haga N (1998) On variety of the Ca coordination in the incommensurate structure of synthetic iron-bearing åkermanite, Ca₂(Mg_0.55Fe_0.45)Si₂O₇, Mineralogical Journal, 20, 47-58 [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
Merlini M, Gemmi M, Hanfland M, Crichton W (2009) High-pressure behavior of akermanite and gehlenite and phase stability of the normal structures in melelites, American Mineralogist, 94, 704-709 [view file]

REFERENCES for Åkermanite

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]

Vogt I H L (1884) Studier over slagger. I, Kongliga Svenska Vetenskaps-Akademiens Handlingar, 9, 3-302 [view file]

Vogt I H L (1890) Die Mineralien der Melilithgruppe - nämlich Gehlenit, Melilith und ein neues tetragonales, nicht Al₂O₃-führendes (Ca,Mg)O-Silikat (Åkermanit), nebst Zwischengliedern, Archiv for Mathematik og Naturvidenskab, 13, 310-402 [view file]

Mokeeva V, Makarov E (1979) Isomorph in melilites: refining of crystal structure of akermanite and intermediate melilite, Geokhimiya, 10, 1541-1544

Kimata M, Ii N (1981) The crystal structure of synthetic akermanite, Ca₂MgSi₂O₇, Neues Jahrbuch für Mineralogie, Monatshefte, 1981, 1-10

Hemingway B S, Evans H T, Nord G L, Haselton H T, Robie R A, McGee J J (1986) Åkermanite: phase transitions in heat capacity and thermal expansion, and revised thermodynamic data, The Canadian Mineralogist, 24, 425-434 [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

Shannon R D, Iishi K, Allik T H, Rossman G R, Liebertz J (1992) Dielectric constants of BaO and melilites and the oxide additivity rule, European Journal of Mineralogy, 4, 1241-1249

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

Kusaka K, Ohmasa M, Hagiya K, Iishi K, Haga N (1998) On variety of the Ca coordination in the incommensurate structure of synthetic iron-bearing åkermanite, Ca₂(Mg_0.55Fe_0.45)Si₂O₇, Mineralogical Journal, 20, 47-58 [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

Merlini M, Gemmi M, Hanfland M, Crichton W (2009) High-pressure behavior of akermanite and gehlenite and phase stability of the normal structures in melelites, American Mineralogist, 94, 704-709 [view file]