Bobdownsite R070654



Name: Bobdownsite
RRUFF ID: R070654
Ideal Chemistry: Ca9Mg(PO3F)(PO4)6
Locality: Tip Top mine, Custer County, South Dakota, USA
Source: Rock Currier [view label]
Owner: RRUFF
Description: A druse of colorless rhombohedra
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: R070654.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Ca8.96Na0.04)Σ=9(Mg0.96Al0.04)Σ=1(P1.00O3(F0.84(OH)0.16)Σ=1)(P1.00O4)6; OH estimated by difference and charge balance
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R070654
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R070654.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.3394(5)Å    b: 10.3394(5)Å    c: 37.084(2)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 3433.3(5)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.

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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 (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, nomencalture and classification (CNMNC), European Journal of Mineralogy, 30, 183-186