Vonsenite R050221



Name: Vonsenite
RRUFF ID: R050221
Ideal Chemistry: Fe2+2Fe3+O2(BO3)
Locality: Monchi mine, Burguillos del Cerro, Badajoz, Extremadura, Spain
Source: Marcus Origlieri
Owner: RRUFF
Description: Mass of thin bladed black crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Ludwigite (5) ]
Quick search: [ All Vonsenite samples (2) ]
CHEMISTRY 
RRUFF ID: R050221.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Fe2+1.96Mg0.03Mn0.01)Σ=2(Fe3+0.98Al0.02)Σ=1BO5
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050221
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050221.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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RRUFF ID: R050221.1
Sample Description: Powder
Instrument settings: PIKE GladiATR - Far-IR on a Nicolet Magna 860 FTIR
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POWDER DIFFRACTION 
RRUFF ID: R050221.1
Sample Description: Powder
Cell Refinement Output: a: 9.4686(9)Å    b: 12.2986(8)Å    c: 3.0726(5)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 357.80(4)Å3    Crystal System: orthorhombic
  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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REFERENCES for Vonsenite

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]

Eakle A S (1920) Vonsenite. A preliminary note on a new mineral, American Mineralogist, 5, 141-143   [view file]

Bertaut E F (1950) Structures des boroferrites, Acta Crystallographica, 3, 473-474

Swinnea J S, Steinfink H (1983) Crystal structure and Mössbauer spectrum of vonsenite, 2FeO·FeBO3, American Mineralogist, 68, 827-832   [view file]