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jeffbenite

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Journal Article
Published: 01 March 2022
American Mineralogist (2022) 107 (3): 405–412.
...Joseph R. Smyth; Fei Wang; E. Ercan Alp; Aaron S. Bell; Esther S. Posner; Steven D. Jacobsen Abstract Single crystals of Al-free, ferromagnesian jeffbenite up to 200 µm in size have been synthesized at 15 GPa and 1200 °C in a 1200 tonne multi-anvil press from a starting composition...
FIGURES | View All (6)
Journal Article
Published: 01 December 2016
Mineralogical Magazine (2016) 80 (7): 1219–1232.
...Fabrizio Nestola; Antony D. Burnham; Luca Peruzzo; Leonardo Tauro; Matteo Alvaro; Michael J. Walter; Mickey Gunter; Chiara Anzolini; Simon C. Kohn Abstract Jeffbenite, ideally Mg 3 Al 2 Si 3 O 8 , previously known as tetragonal-almandine-pyrope-phase (‘TAPP’), has been characterized as a new...
FIGURES | View All (5)
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( a ) Baseline corrected deconvolution of a Raman spectrum of Fe-rich jeffb...
Published: 01 March 2022
Figure 5. ( a ) Baseline corrected deconvolution of a Raman spectrum of Fe-rich jeffbenite, sample B8 used in the X-ray diffraction study. ( b ) Comparison of the raw (uncorrected) Raman spectrum of Fe-rich jeffbenite with a natural jeffbenite found as a diamond inclusion with approximate formula
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Unpolarized and baseline corrected FTIR spectra of Fe-rich <span class="search-highlight">jeffbenite</span> cryst...
Published: 01 March 2022
Figure 3. Unpolarized and baseline corrected FTIR spectra of Fe-rich jeffbenite crystal double-side polished to 8–10 µm thickness. The spectrum is dominated by interference fringes, but is free of contamination from the glue used to polish the crystal as would have been evident by strong C-H
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Crystal structure (inverse) of Fe-rich <span class="search-highlight">jeffbenite</span> viewed along a direction ...
Published: 01 March 2022
Figure 1. Crystal structure (inverse) of Fe-rich jeffbenite viewed along a direction close to the b axis ( c -horizontal). Figure was drawn using VESTA, developed by Momma and Izumi (2011) .
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Raman spectra of synthetic ferromagnesian <span class="search-highlight">jeffbenite</span> from ( a ) 0–2500 cm −...
Published: 01 March 2022
Figure 2. Raman spectra of synthetic ferromagnesian jeffbenite from ( a ) 0–2500 cm −1 and ( b ) from 2500–4500 cm −1 on an expanded vertical scale, showing the absence of detectible O-H Raman modes. The spectrum in black was taken on the same crystal used in the X-ray diffraction study (sample
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Mössbauer parameters of Fe assigned to M1, M2, and M3 sites in <span class="search-highlight">jeffbenite</span> f...
Published: 01 March 2022
Figure 6. Mössbauer parameters of Fe assigned to M1, M2, and M3 sites in jeffbenite from this study and the samples BZ238A and BZ243A from McCammon et al. (1997) . Error bars show uncertainty in the fits for each doublet. Shaded regions show the classification of iron coordination and oxidation
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Raman spectra of a variety of phases included in sublithospheric diamonds. ...
Published: 01 July 2022
110208245246 in Smith et al. 2018 ). NaAl-pyroxene was found as part of a composite inclusion with jeffbenite in a Type IIb diamond (sample 880000037816 in Smith et al. 2018 ). The jeffbenite shown is in a diamond from Sao Luiz (Juina area), Brazil ( Nestola et al. 2016 ). Phases related to Ca- and Ca,Ti
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The single crystal of <span class="search-highlight">jeffbenite</span> studied in this work on which the crystal ...
Published: 01 December 2016
Fig. 1. The single crystal of jeffbenite studied in this work on which the crystal structure was determined together with all further physical and optical properties. The emerald green colour is characteristic for this phase.
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Crystal structure of <span class="search-highlight">jeffbenite</span> viewed perpendicular to  c  (left) and alon...
Published: 01 December 2016
Fig. 5. Crystal structure of jeffbenite viewed perpendicular to c (left) and along a closed direction to the c axis (right) to better visualize the M1 site with the M1–O bonds.
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Micro-Raman spectrum of <span class="search-highlight">jeffbenite</span> carried out on the crystal in  Fig. 1 . ...
Published: 01 December 2016
Fig. 4. Micro-Raman spectrum of jeffbenite carried out on the crystal in Fig. 1 . Data were collected between 50 and 1800 cm –1 (see the text for more experimental details).
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Elemental distribution map of Si, Mg, Al, Fe, Mn, Cr and Ca for the jeffben...
Published: 01 December 2016
Fig. 3. Elemental distribution map of Si, Mg, Al, Fe, Mn, Cr and Ca for the jeffbenite crystal shown in Fig. 2 . No further elements were mapped as the preliminary EDS results showed no other elements.
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Backscattered electron images of composite MgSiO 3 -rich inclusions from pr...
Published: 01 July 2022
), with permission from Elsevier; ( f ) Reprinted by permission from Springer Nature Customer Service Centre GmbH: Springer Nature. Hayman et al. (2005) , Copyright 2005. Opx = orthopyroxene; Ol = olivine; Ulv = ulvöspinel; TAPP = jeffbenite; sp = spinel; MgSi-Pv = MgSiO 3 -phase.
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TiO 2  (a) , Na 2 O  (b) , CaO  (c)  and Al 2 O 3  (d)  versus Mg# showing ...
Published: 01 July 2022
Figure 15. TiO 2 (a) , Na 2 O (b) , CaO (c) and Al 2 O 3 (d) versus Mg# showing high-Al MgSiO 3 -rich inclusions: blue diamonds , low-Al single phase inclusions; cyan diamonds high-Al composite inclusions; green diamonds , jeffbenite inclusions; red diamonds, Type III inclusions
Journal Article
Published: 01 July 2022
Reviews in Mineralogy and Geochemistry (2022) 88 (1): 393–450.
...), with permission from Elsevier; ( f ) Reprinted by permission from Springer Nature Customer Service Centre GmbH: Springer Nature. Hayman et al. (2005) , Copyright 2005. Opx = orthopyroxene; Ol = olivine; Ulv = ulvöspinel; TAPP = jeffbenite; sp = spinel; MgSi-Pv = MgSiO 3 -phase. ...
FIGURES | View All (25)
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(a)  NiO,  (b)  Al 2 O 3 ,  (c)  Cr 2 O 3  and  (d)  CaO versus Mg# showing...
Published: 01 July 2022
Figure 20. (a) NiO, (b) Al 2 O 3 , (c) Cr 2 O 3 and (d) CaO versus Mg# showing olivine inclusions from the global dataset: green diamonds , co-occurring with ferropericlase, MgSiO 3 , ±CaSiO 3 ; grey diamonds , co-occurring with ferropericlase ±cpx ±jeffbenite; white diamonds , other
Journal Article
Published: 01 April 2017
American Mineralogist (2017) 102 (4): 916–920.
... for eight new minerals, including batievaite-(Y), bunnoite, castellaroite, chongite, gajardoite, jeffbenite, lucchesiite, and tvrdýite. * All minerals marked with an asterisk have been approved by the IMA CNMMC. † For a complete listing of all IMA-validated unnamed minerals and their codes...
Journal Article
Published: 01 July 2022
Reviews in Mineralogy and Geochemistry (2022) 88 (1): 451–473.
... 110208245246 in Smith et al. 2018 ). NaAl-pyroxene was found as part of a composite inclusion with jeffbenite in a Type IIb diamond (sample 880000037816 in Smith et al. 2018 ). The jeffbenite shown is in a diamond from Sao Luiz (Juina area), Brazil ( Nestola et al. 2016 ). Phases related to Ca- and Ca,Ti...
FIGURES | View All (5)
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Projection of MgSiO 3 -rich inclusion compositions (Table 6) into the pseud...
Published: 01 July 2022
composite inclusions; green diamonds , jeffbenite inclusions; red diamonds , high-Na (Type III of Hutchison et al. 2001 ). Fields are also shown for experimental bridgmanite and akimotoite produced in meta-basaltic, meta-peridotitic and meta-harzburgitic assemblages at pressures from 23 to 47 GPa
Journal Article
Journal: Geology
Published: 18 January 2019
Geology (2019) 47 (3): 219–222.
... stable to room pressure. Numerous lines of evidence, particularly association with low-Ni enstatite, have indicated that ferropericlase has a lower-mantle origin ( Harte et al., 1999 ; Stachel et al., 2000 ). However, the association of ferropericlase with olivine and jeffbenite (previously known...
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