Pickeringite R060108
Name: Pickeringite
RRUFF ID: R060108
Ideal Chemistry: MgAl2(SO4)4·22H2O
Locality: Tucumcari, New Mexico, USA
Source: University of Arizona Mineral Museum 4989 [view label]
Owner: RRUFF
Description: Colorless acicular aggregates
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Halotrichite (7) ]
CHEMISTRY 
RRUFF ID: R060108.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mg0.88Mn0.12)Σ=1Al2.00(S1.00O4)4·22H2O
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060108
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
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Raman Data (RAW) View Graph
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POWDER DIFFRACTION 
RRUFF ID: R060108.1
Sample Description: Powder
Cell Refinement Output: a: 6.180(1)Å    b: 24.268(4)Å    c: 21.217(4)Å
alpha: 90°    beta: 100.31(1)°    gamma: 90°   Volume: 3130.9(6)Å3    Crystal System: monoclinic
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Calculated diffraction file.

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

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

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Cell Refinement Data
Cell Refinement Output Data
DIF File
X-ray Data (XY - Processed)
RRUFF File
X-ray Data (XY - RAW) View Graph
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REFERENCES for Pickeringite

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]

Hayes A A (1844) Description and analysis of pickeringite, a native magnesian alum, American Journal of Science and Arts, 46, 360-362   [view file]

Schulze H (1889) Mineralogisches aus Tarapacá, Verhandlungen des Deutschen Wissenschaftlichen Vereines zu Santiago, 2, 49-60   [view file]

Larsen E S (1921) The microscopic determination of the nonopaque minerals, U.S. Geological Survey Bulletin, 671, 5-294   [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

Quartieri S, Triscari M, Viani A (2000) Crystal structure of the hydrated sulphate pickeringite (MgAl2(SO4)4·22H2O): X-ray powder diffraction study, European Journal of Mineralogy, 12, 1131-1138

Lane M D (2007) Mid-infrared emission spectroscopy of sulfate and sulfate-bearing minerals, American Mineralogist, 92, 1-18   [view file]

Mauro D, Biagioni C, Pasero M, Skogby H (2019) Crystal-chemistry of sulfates From the Apuan Alps (Tuscany, Italy). III. Mg-rich sulfate assemblages from the Fornovolasco mining complex, Atti della Società Toscana di Scienze Naturali, Memorie, Serie A, 126, 33-44