Alum-(K) R060528

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Record 117 of 4043  


Name: Alum-(K)
RRUFF ID: R060528
Ideal Chemistry: KAl(SO4)2·12H2O
Locality: El Desierto mine fumaroles, Potosí, Bolivia
Source: Michael Scott S100782 [view label]
Owner: Michael Scott
Description: Colorless thin tabular crystals associated with yellow sulfur and colorless tamarugite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Alum (5) ]
Quick search: [ All Alum-(K) samples (3) ]
CHEMISTRY 
RRUFF ID: R060528.2
Sample Description: Microprobe Fragment
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample.
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Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060528
Wavelength:
Sample Description: Unoriented sample.
Instrument settings: Thermo Almega XR 532nm @ 50% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R060528.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 12.151(2)Å    b: 12.151(2)Å    c: 12.151(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1794.0(4)Å3    Crystal System: cubic
  File Type Information Close
Calculated diffraction file.

  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