Despujolsite R100208



Name: Despujolsite
RRUFF ID: R100208
Ideal Chemistry: Ca3Mn4+(SO4)2(OH)6·3H2O
Locality: N'Chwaning III mine, Kalahari Manganese Field, Northern Cape Province, South Africa
Source: Marcus Origlieri
Owner: RRUFF
Description: Lime green transparent crystal fragment. Sample was used in Barkley et al (2011)
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Fleischerite (4) ]
CHEMISTRY 
RRUFF ID: R100208.2
Sample Description: Microprobe fragment. This sample is unstable under the electron beam. Analysis is semi-quanititative only. Note beam damage in SEM image.
Measured Chemistry: Ca3.44(Mn+40.86Fe+30.06)Σ=0.92(S0.96O4)2(OH)6·3H2O
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R100208
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R100208.1
Sample Description: Powder
Cell Refinement Output: a: 8.5264(1)Å    b: 8.5264(1)Å    c: 10.7900(3)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 679.33(2)Å3    Crystal System: hexagonal
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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.

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

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REFERENCES for Despujolsite

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]

Gaudefroy C, Granger M M, Permingeat F, Protas J (1968) La despujolsite, une nouvelle espèce minérale, Bulletin de la Société Française de Minéralogie et de Cristallographie, 91, 43-50   [view file]

Fleischer M (1969) New mineral names, American Mineralogist, 54, 326-330   [view file]

Hawthorne F C (1994) Structural aspects of oxide and oxysalt crystals, Acta Crystallographica, B50, 481-510

Barkley M C, Yang H, Evans S H, Downs R T, Origlieri M J (2011) Redetermination of despujolsite, Ca3Mn4+(SO4)2(OH)6·3H2O, Acta Crystallographica, E67, i47-i48   [view file]