Bobdownsite R100215

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Record 322 of 459  

Name: Bobdownsite
RRUFF ID: R100215
Ideal Chemistry: Ca9Mg(PO3F)(PO4)6
Locality: Tip Top mine, Custer County, South Dakota, USA
Source: Tom Loomis, Dakota Matrix Minerals #120908W-4 [view label]
Owner: RRUFF
Description: Crust of colorless crystals on quartz
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Cerite (11) ]
Quick search: [ All Bobdownsite samples (6) ]
RRUFF ID: R100215.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca9.00(Mg0.89Na0.07Sr0.01)Σ=0.97(P1.00O4)6(P0.88O3(F0.74(OH)0.26)Σ=1.00)
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented Raman on the primary sample

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RRUFF ID: R100215
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R100215.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.364(1)Å    b: 10.364(1)Å    c: 37.181(5)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 3458.4(4)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 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   [view file]