Bobdownsite R050109

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Record 502 of 4043  


Name: Bobdownsite
RRUFF ID: R050109
Ideal Chemistry: Ca9Mg(PO3F)(PO4)6
Locality: Big Fish River, Yukon Territory, Canada
Source: Rock Currier
Owner: RRUFF
Description: Colorless hexagonal tabular crystals, type sample
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Whitlockite (10) ]
Quick search: [ All Bobdownsite samples (6) ]
CHEMISTRY 
RRUFF ID: R050109.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Ca8.76Na0.24)Σ=9(Mg0.72Fe3+0.13Al0.11Fe2+0.04)Σ=1(P1.00O4)6(P1.00O3F1.00); Fe2+ and Fe3+ by charge balance
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented, mounted onto a pin and polished
Pin ID: L00351
Orientation: Laser parallel to  a*  (1 0 0).     Fiducial mark perpendicular to laser is parallel to  -c   [0 0 -1].
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Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050109
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050109.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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RRUFF ID: R050109.1
Sample Description: Powder
Instrument settings: PIKE GladiATR - Far-IR on a Nicolet Magna 860 FTIR
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POWDER DIFFRACTION 
RRUFF ID: R050109.1
Sample Description: Powder
Cell Refinement Output: a: 10.3440(2)Å    b: 10.3440(2)Å    c: 37.0998(8)Å
alpha: 90.°    beta: 90.°    gamma: 120.°   Volume: 3437.8(1)Å3    Crystal System: hexagonal
  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 Bobdownsite

American Mineralogist Crystal Structure Database Record: [view record]

Gnos E, Hofmann B, Franchi I A, Al-Kathiri A, Hauser M, Moser L (2002) Sayh al Uhaymir 094: A new martian meteorite from the Oman desert, Meteoritics and Planetary Science, 37, 835-854   [view file]

Williams P A, Hatert F, Pasero M (2008) New minerals approved in 2008, in International Mineralogical Association 1-13   [view file]

Tait K T, Barkley M C, Thompson R M, Origlieri M J, Evans S H, Prewitt C T, Yang H (2011) Bobdownsite, a new mineral species from Big Fish River, Yukon, Canada, and its structural relationship with whitlockite-type compounds, The Canadian Mineralogist, 49, 1065-1078   [view file]

Nazarov M A, Teplyakova S N, Brandstaetter F, Ntaflos T (2013) Fluorine-bearing merrillite from a silicate inclusion of the Elga (IIE) iron meteorite, Lunar and Planetary Science, 44, 1342-1343

Tait K, Dunnell K (2014) Bobdownsite, a relatively new mineral from Canada faceted as a gemstone, The Journal of Gemmology, 34, 97-97   [view file]

Hålenius U, Hatert F, Pasero M, Mills S J (2018) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 41. New minerals and nomenclature modifications approved in 2017 and 2018, Mineralogical Magazine, 82, 229–233   [view file]

McCubbin F M, Phillips B L, Adcock C T, Tait K T, Steele A, Vaughn J S, Fries M D, Atudorei V, Vander Kaaden K E, Hausrath E M (2018) Discreditation of bobdownsite and the establishment of criteria for the identification of minerals with essential monofluorophosphate (PO3F2-), American Mineralogist, 103, 1319–1328