----- R110026 - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

Bobdownsite R110026

Name: Bobdownsite
RRUFF ID: R110026
Ideal Chemistry: Ca₉Mg(PO₃F)(PO₄)₆
Locality: Tip Top mine, Custer County, South Dakota, USA
Source: Tom Loomis, Dakota Matrix Minerals #120908W-3 [view label]
Owner: RRUFF
Description: Crust of pale purple 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:	R110026.2
Sample Description:	Microprobe Fragment
Measured Chemistry:	(Ca_8.67Na_0.23)_Σ=8.90(Mg_0.93Mn_0.06)_Σ=0.99(P_0.93O₃(F_0.79(OH)_0.21)_Σ=1.00)(P_1.00O₄)₆
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.

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R110026

Wavelength:

Sample Description:

Unoriented Raman on the primary sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

DOWNLOADS:

	Raman Data (RAW)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R110026.9

Sample Description:

Single crystal, powder profile is calculated

Cell Refinement Output:

a: 10.3339(7)Å b: 10.3339(7)Å c: 37.118(3)Å
alpha: 90° beta: 90° gamma: 120° Volume: 3432.7(6)Å³ Crystal System: hexagonal

File Type Information

Calculated diffraction file.

File Type Information

Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

DOWNLOADS:

	DIF File
	X-ray Data (XY - RAW)
	RRUFF File

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 (PO₃F^2-), American Mineralogist, 103, 1319–1328 [view file]

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 (PO₃F^2-), American Mineralogist, 103, 1319–1328 [view file]