Alunogen R060015

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Name: Alunogen
RRUFF ID: R060015
Ideal Chemistry: Al2(SO4)3(H2O)12·5H2O
Locality: Saxony, Germany
Source: American Museum of Natural History 16646 [view label]
Owner: RRUFF
Description: Colorless compact mass of fibers, along with some sprays of acicular single crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Alunogen samples (2) ]
CHEMISTRY 
RRUFF ID: R060015.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Al1.77Fe3+0.23)Σ=2(S1.00O4)3·17H2O
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060015
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 50% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R060015.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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POWDER DIFFRACTION 
RRUFF ID: R060015.1
Sample Description: Powder
Cell Refinement Output: a: 7.4130(4)Å    b: 26.7219(8)Å    c: 6.0210(7)Å
alpha: 88.728(3)°    beta: 99.643(9)°    gamma: 91.802(5)°   Volume: 1175.1(0)Å3    Crystal System: triclinic
  File Type Information Close
Calculated diffraction file.

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

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Alunogen

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]

Beudant F S (1832) Alunogène, sulfate d’alumine, in Traité Élémentaire de Minéralogie, 2nd Edition Paris 488-492   [view file]

Larsen E S, Steiger G (1928) Dehydration and optical studies of alunogen, nontronite and griffithite, American Journal of Science, 15, 1-19   [view file]

Gordon S G (1942) Results of the Chilean mineralogical expedition of 1938. Part VII.—The crystallography of alunogen, meta-alunogen and pickeringite, Notulae Naturae of The Academy of Natural Sciences of Philadelphia, 101, 1-9

Menchetti S, Sabelli C (1974) Alunogen. Its structure and twinning, Tschermaks Mineralogische und Petrographische Mitteilungen, 21, 164-178

Fang J H, Robinson P D (1976) Alunogen, Al2(H2O)12(SO4)3·5H2O: Its atomic arrangement and water content, American Mineralogist, 61, 311-317   [view file]

Bariand P, Cesbron F, Berthelon J-P (1977) Les sulfates de fer de Saghand près de Yazd (Iran), Mémoire Hors-Série de la Société Géologique de France, 8, 77-85   [view file]

Kahlenberg V, Braun D E, Orlova M (2015) Investigations on alunogen under Mars-relevant temperature conditions: an example for a single-crystal-to-single-crystal phase transition, American Mineralogist, 100, 2548-2558

Košek F, Culka A, Žáček V, Laufek F, Škoda R, Jehlička J (2018) Native alunogen: A Raman spectroscopic study of a well-described specimen, Journal of Molecular Structure, 1157, 191-200