Important Update News

rruff.info is being updated to improve its interface and content. The beta version of the update is accessible to the public at www.rruff.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Once released, the address will revert to RRUFF.info.

We are grateful to NASA for the funding of this effort.

Bobdownsite R100214

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 11 of 144  


Name: Bobdownsite
RRUFF ID: R100214
Ideal Chemistry: Ca9Mg(PO3F)(PO4)6
Locality: Tip Top mine, Custer County, South Dakota, USA
Source: Tom Loomis, Dakota Matrix Minerals #120908W-2 [view label]
Owner: RRUFF
Description: Crust of pale yellow 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) ]
CHEMISTRY 
RRUFF ID: R100214.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Ca8.78Na0.13Sr0.03)Σ=8.94(Mg0.96Fe0.003Mn0.003)Σ=0.97(P1.00O4)6(P0.91O3(F0.80(OH)0.20)Σ=1.00)
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R100214
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R100214.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.3633(7)Å    b: 10.3633(7)Å    c: 37.119(2)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 3452.4(5)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.

DOWNLOADS:

DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
X Min:    X Max:    X Sort:
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]