Whewellite R050240

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Record 1 of 3  

Name: Whewellite
RRUFF ID: R050240
Ideal Chemistry: CaC2O4·H2O
Locality: Huron River, Milan, Ohio, USA
Source: Marcus Origlieri
Owner: RRUFF
Description: White fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Quick search: [ All Whewellite samples (3) ]
CHEMISTRY 
RRUFF ID: R050240.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca1.00C2O4·H2O
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented, mounted onto a pin and polished
Pin ID: L00839
Orientation: Laser parallel to  c*  (0 0 1).     Fiducial mark perpendicular to laser is parallel to  a   [1 0 0].
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050240
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (RAW) View Graph
RRUFF File
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050240.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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Infrared Data (Processed)
RRUFF File
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RRUFF ID: R050240.1
Sample Description: Powder
Instrument settings: PIKE GladiATR - Far-IR on a Nicolet Magna 860 FTIR
Resolution:
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Infrared Data (Processed)
RRUFF File
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POWDER DIFFRACTION 
RRUFF ID: R050240.1
Sample Description: Powder
Cell Refinement Output: a: 6.2911(3)Å    b: 14.5855(7)Å    c: 10.1167(3)Å
alpha: 90°    beta: 109.483(4)°    gamma: 90°   Volume: 875.14(4)    Crystal System: monoclinic
  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.

  File Type Information Close
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
RRUFF File
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REFERENCES for Whewellite

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]

Phillips W, Brooke H J, Miller W H (1852) Whewellite, in An Elementary Introduction to Mineralogy Longman, Brown, Green, and Longmans London 523-524   [view file]

Frondel C (1962) Mineralogical notes: thierschite (=whewellite), American Mineralogist, 47, 786-786   [view file]

International Mineralogical Association (1967) Commission on new minerals and mineral names, Mineralogical Magazine, 36, 131-136   [view file]

Shippey T A (1980) Vibrational studies of calcium oxalate monohydrate (whewellite) and an anhydrous phase of calcium oxalate, Journal of Molecular Structure, 63, 157-166

Tazzoli V, Domeneghetti C (1980) The crystal structures of whewellite and weddellite: re-examination and comparison, American Mineralogist, 65, 327-334   [view file]

Frost R L, Weier M L (2003) Raman spectroscopy of natural oxalates at 298 and 77 K, Journal of Raman Spectroscopy, 34, 776-785   [link]

Echigo T, Kimata M, Kyono A, Shimizu M, Hatta T (2005) Re-investigation of the crystal structure of whewellite [Ca(C2O4)·H2O] and the dehydration mechanism of caoxite [Ca(C2O4)·3H2O], Mineralogical Magazine, 69, 77-88   [view file]

Piilonen P C, Ercit T S (2005) New mineral names, American Mineralogist, 90, 1466-1469   [view file]

Hernanz A, Gavira-Vallejo J M, Ruiz-Lopez J F (2007) Calcium oxalates and prehistoric paintings. The usefulness of these biominerals, Journal of Optoelectronics and Advanced Materials, 9, 512-521

Echigo T, Kimata M (2010) Crystal chemistry and genesis of organic minerals: A review of oxalate and polycyclic aromatic hydrocarbon minerals, The Canadian Mineralogist, 48, 1329-1358