Alum-(K) R040134

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Record 126 of 4216  

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) ]
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
Sample Description: Unoriented sample

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RRUFF ID: R040134
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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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.

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

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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) 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

Biagioni C, Mauro D, Pasero M, Bonaccorsi E, Lepore G O, Zaccarini F, Skogby H (2020) Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). VI. Tl-bearing alum-(K) and voltaite from the Fornovolasco mining complex, American Mineralogist, 105, 1088-1098   [view file]

Biagioni C, Mauro D, Pasero M (2020) Sulfates from the pyrite ore deposits of the Apuan Alps (Tuscany, Italy): A review, Minerals, 10, 1092   [view file]