- R130105 - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

Brownmillerite R130105

Name: Brownmillerite
RRUFF ID: R130105
Ideal Chemistry: Ca₂Fe³⁺AlO₅
Locality: Ettringer Feld, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Source: Donald Doell [view label]
Owner: RRUFF
Description: Brownish-red platy crystals. Diffraction indicates an I-centered lattice
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.

Mineral Groups: [ Brownmillerite (2) ] [ Perovskite (44) ]

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented sample

DOWNLOADS:

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

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R130105

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

DOWNLOADS:

	Raman Data (Processed)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R130105.9

Sample Description:

Single crystal, powder profile is calculated

Cell Refinement Output:

a: 5.353(1)Å b: 14.504(3)Å c: 5.583(1)Å
alpha: 90° beta: 90° gamma: 90° Volume: 433.4(1)Å³ Crystal System: orthorhombic

File Type Information

Calculated diffraction file.

File Type Information

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

DOWNLOADS:

	DIF File
	X-ray Data (XY - RAW)
	RRUFF File

REFERENCES for Brownmillerite
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]
Bertaut E F, Blum P, Sagnières A (1959) Structure du ferrite bicalcique et de la brownmillerite, Acta Crystallographica, 12, 149-159
Hentschel G (1964) Mayenit, 12CaO·7Al₂O₃, und Brownmillerit, 2CaO·(Al,Fe)₂O₃, zwei neue Minerale in den Kalksteinschlüssen der Lava des Ettringer Bellerberges, Neues Jahrbuch für Mineralogie, Monatshefte, 1964, 22-29
Fleischer M (1965) New mineral names, American Mineralogist, 50, 2096-2111 [view file]
Colville A A, Geller S (1971) The crystal structure of brownmillerite, Ca₂FeAlO₅, Acta Crystallographica, B27, 2311-2315
Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca₂(Fe_2-xAl_x)O₅: Single-crystal X-ray diffraction at 25°C and high-temperature X-ray powder diffraction (25°C< T <1000°C), American Mineralogist, 89, 405-420 [view file]
Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca₂Fe_2-xAl_xO₅, Physics and Chemistry of Minerals, 35, 493-504
Mitchell R H, Welch M D, Chakhmouradian A R (2017) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition, Mineralogical Magazine, 81, 411-461 [view file]

REFERENCES for Brownmillerite

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]

Bertaut E F, Blum P, Sagnières A (1959) Structure du ferrite bicalcique et de la brownmillerite, Acta Crystallographica, 12, 149-159

Hentschel G (1964) Mayenit, 12CaO·7Al₂O₃, und Brownmillerit, 2CaO·(Al,Fe)₂O₃, zwei neue Minerale in den Kalksteinschlüssen der Lava des Ettringer Bellerberges, Neues Jahrbuch für Mineralogie, Monatshefte, 1964, 22-29

Fleischer M (1965) New mineral names, American Mineralogist, 50, 2096-2111 [view file]

Colville A A, Geller S (1971) The crystal structure of brownmillerite, Ca₂FeAlO₅, Acta Crystallographica, B27, 2311-2315

Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca₂(Fe_2-xAl_x)O₅: Single-crystal X-ray diffraction at 25°C and high-temperature X-ray powder diffraction (25°C< T <1000°C), American Mineralogist, 89, 405-420 [view file]

Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca₂Fe_2-xAl_xO₅, Physics and Chemistry of Minerals, 35, 493-504

Mitchell R H, Welch M D, Chakhmouradian A R (2017) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition, Mineralogical Magazine, 81, 411-461 [view file]