Alum-(K) R040134

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Record 115 of 4039  

Name: Alum-(K)
RRUFF ID: R040134
Ideal Chemistry: KAl(SO4)2·12H2O
Locality: Alunite mine, Esmeralda County, Nevada, USA
Source: University of Arizona Mineral Museum 9391 [view label]
Owner: RRUFF
Description: Colorless coarsely crystalline massive
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Alum (5) ]
Quick search: [ All Alum-(K) samples (3) ]
CHEMISTRY 
RRUFF ID: R040134.2
Sample Description: Microprobe Fragment
Measured Chemistry: (K0.86(NH4)0.14)Σ=1Al1.00(S1.00O4)2·12H2O ; NH4 not measured but estimated by stoichiometry
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R040134
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R040134.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
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POWDER DIFFRACTION 
RRUFF ID: R040134.1
Sample Description: Powder
Cell Refinement Output: a: 12.1614(1)Å    b: 12.1614(1)Å    c: 12.1614(1)Å
alpha: 90.°    beta: 90.°    gamma: 90.°   Volume: 1798.67(5)Å3    Crystal System: cubic
  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 Alum-(K)

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]

Pliny [translated by Bostock J, Riley H T 1898] (77) Book XXXV, Chapter 52. Alumen, and the several varieties of it; thirty-eight remedies, in The Natural History of Pliny George Bell and Sons London   [view file]

Palache C, Berman H, Frondel C (1951) 29.5.5.1 Potash alum [KAl(SO4)2·12H2O], in The System of Mineralogy, Volume II, Seventh Edition John Wiley and Sons, Inc New York 472-474   [view file]

Larson A C, Cromer D T (1967) Refinement of the alum structures. III. X-ray study of the α alums, K, Rb and NH4Al(SO4)2.12H2O, Acta Crystallographica, 22, 793-800

Nyburg S C, Steed J, Aleksovska S, Petrusevski V M (2000) Structure of the alums. I. On the sulfate group disorder in the alpha-alums, Acta Crystallographica, B56, 204-209

Burke E A J (2008) Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks, The Mineralogical Record, 39, 131-135   [view file]

Ballirano P (2015) Thermal behaviour of alum-(K) KAl(SO4)2·12H2O from in situ laboratory high-temperature powder X-ray diffraction data: thermal expansion and modeling of the sulfate orientational disorder, Mineralogical Magazine, 79, 157-170

Hulsobosch N, Thomas R, Boiron M-C, Dewaele S, Muchez P (2017) Direct observation of boro-aluminosilicate melt compositions: Insights from Raman spectroscopy of melt inclusions in pegmatitic tourmaline of the Gatumba-Gitarama area (Rwanda), The Canadian Mineralogist, 55, 377-397