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davisite

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Journal Article
Published: 01 May 2009
American Mineralogist (2009) 94 (5-6): 845-848.
...Chi Ma; George R. Rossman Abstract Davisite, ideally CaScAlSiO 6 , is a new member of the Ca clinopyroxene group, where Sc 3+ is dominant in the M1 site. It occurs as micro-sized crystals along with perovskite and spinel in an ultra-refractory inclusion from the Allende meteorite. The mean chemical...
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Micro-Raman spectra of panguite and associated <b>davisite</b> in the refractory i...
Published: 01 July 2012
Figure 4 Micro-Raman spectra of panguite and associated davisite in the refractory inclusion, collected under identical conditions, showing absolute intensities. The spectra are offset vertically for clarity of display.
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Backscatter electron image of the <b>davisite</b>-containing refractory inclusion ...
Published: 01 May 2009
F igure 1. Backscatter electron image of the davisite-containing refractory inclusion in a polished section (USNM 7555) of the Allende meteorite.
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Enlarged BSE image showing <b>davisite</b> with perovskite and spinel (Fig. 1 ). T...
Published: 01 May 2009
F igure 2. Enlarged BSE image showing davisite with perovskite and spinel (Fig. 1 ). The cross marks where the EBSD pattern (shown in Fig. 3 ) was collected.
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( a ) EBSD pattern of the labeled <b>davisite</b> crystal (marked with a cross) in...
Published: 01 May 2009
F igure 3. ( a ) EBSD pattern of the labeled davisite crystal (marked with a cross) in Figure 2 ; ( b ) the pattern perfectly indexed with the C 2 /c CaScAlSiO 6 structure.
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Raman spectra of <b>davisite</b> (this study) and synthetic CaScAlSiO 6  ( Sekita ...
Published: 01 May 2009
F igure 4. Raman spectra of davisite (this study) and synthetic CaScAlSiO 6 ( Sekita et al. 1988 ), collected under different conditions, showing relative intensities. The spectrum for the synthetic sample covers a very limited range, and is displaced vertically from the zero line
Journal Article
Published: 01 May 2013
American Mineralogist (2013) 98 (5-6): 870-878.
...Chi Ma; Oliver Tschauner; John R. Beckett; George R. Rossman; Wenjun Liu Abstract Kangite (IMA 2011-092), (Sc,Ti,Al,Zr,Mg,Ca,□) 2 O 3 , is a new scandia mineral, occurring as micrometer-sized crystals with REE-rich perovskite and spinel in a davisite-dominant ultra-refractory inclusion from...
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Journal Article
Published: 01 July 2012
American Mineralogist (2012) 97 (7): 1219-1225.
...Figure 4 Micro-Raman spectra of panguite and associated davisite in the refractory inclusion, collected under identical conditions, showing absolute intensities. The spectra are offset vertically for clarity of display. ...
FIGURES | View All (6)
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COMPARISON BETWEEN CRYSTALLOGRAPHIC CHARACTERISTICS OF JERVISITE, ITS SYNTH...
Published: 15 July 2019
TABLE 5. COMPARISON BETWEEN CRYSTALLOGRAPHIC CHARACTERISTICS OF JERVISITE, ITS SYNTHETIC ANALOGUE, AND SYNTHETIC ANALOGUES OF AEGIRINE AND DAVISITE
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Backscatter electron (BSE) image of ultra-refractory inclusion ACM-3 in sec...
Published: 01 May 2013
Figure 1 Backscatter electron (BSE) image of ultra-refractory inclusion ACM-3 in section USNM 7555 from the Allende meteorite, where the type davisite ( Ma and Rossman 2009b ) and kangite (this study) occur.
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Enlarged backscatter image showing the area where panguite crystals (type m...
Published: 01 July 2012
Figure 2 Enlarged backscatter image showing the area where panguite crystals (type material) occur with smaller Zr-rich panguite in davisite ( Fig. 1 ). The cross marks where the EBSD pattern (shown in Fig. 3 ) and the synchrotron micro-diffraction data were collected. The mottled appearance
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Enlarged BSE images of ACM-3 with contrasts optimized to show kangite micro...
Published: 01 May 2013
Figure 2 Enlarged BSE images of ACM-3 with contrasts optimized to show kangite microcrystals (type material) with perovskite and spinel in host davisite. The cross mark shown in panel a indicates where the EBSD pattern (shown in Fig. 6 ) and the synchrotron micro-Laue diffraction data were
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Comparison of a calculated and observed Raman spectrum of panguite. The spe...
Published: 01 July 2012
Figure 5 Comparison of a calculated and observed Raman spectrum of panguite. The spectrum of panguite shown in Figure 4 was processed by subtraction of background and of a spectrum of davisite. Gray bars: Calculated spectrum of panguite. Only A g modes are shown and intensities represent an XX
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( a ) Molar ternary diagram of three cation groups in the M1 site from the ...
Published: 01 October 2009
are dominant in the M1 site. Square = grossmanite (USNM 7562, 7555, 7554); circle = davisite (USNM 7555); triangle = kushiroite (USNM 7554; ALH1); diamond = Ti-rich diopside (USNM 7554, TS32).
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Abundance of REE and Y relative to CI chondrites ( Anders and Grevesse 1989...
Published: 01 May 2013
set at the detection limit for our EPMA analyses. Also shown are the REE patterns for an ultra-refractory cluster of oxides in Ornans inclusion 1105-42 ( Davis 1991 ) and inclusion HIB-11 from Murchison, which consists of perovskite and spinel in a davisite-rich inclusion ( Simon et al. 1996 ). Error
Journal Article
Published: 15 July 2019
The Canadian Mineralogist (2019) 57 (4): 489-498.
...TABLE 5. COMPARISON BETWEEN CRYSTALLOGRAPHIC CHARACTERISTICS OF JERVISITE, ITS SYNTHETIC ANALOGUE, AND SYNTHETIC ANALOGUES OF AEGIRINE AND DAVISITE ...
FIGURES | View All (5)
Journal Article
Published: 01 October 2009
American Mineralogist (2009) 94 (10): 1491-1494.
... are dominant in the M1 site. Square = grossmanite (USNM 7562, 7555, 7554); circle = davisite (USNM 7555); triangle = kushiroite (USNM 7554; ALH1); diamond = Ti-rich diopside (USNM 7554, TS32). ...
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Journal Article
Published: 01 July 2013
American Mineralogist (2013) 98 (7): 1368-1371.
... of refractory silicates, joining other nine refractory silicates melilite, Al,Ti-diopside, anorthite, rhönite, and newly approved davisite Ca(Sc,Mg,Ti 3+ ,Ti 4+ )AlSiO 6 ( Ma and Rossman 2009b ), grossmanite Ca(Ti 3+ ,Mg,Ti 4+ )AlSiO 6 ( Ma and Rossman 2009c ), kushiroite CaAlAlSiO 6 ( Kimura et al. 2009...
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Journal Article
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 667-670.
...,Al) 2 O 6 , tazheranite (Zr,Ti,Ca,Y)O 1.75 ( Ma and Rossman 2008b ), tistarite Ti 2 O 3 ( Ma and Rossman 2009a ), rutile TiO 2 ( Ma et al. 2009 ), davisite Ca(Sc,Ti,Mg)AlSiO 6 ( Ma and Rossman 2009b ), grossmanite CaTiAlSiO 6 ( Ma and Rossman 2009c ), panguite (Ti,Sc,Al,Mg,Zr,Ca,□) 2 O 3 ( Ma...
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Journal Article
Published: 01 January 2010
American Mineralogist (2010) 95 (1): 188-191.
... in refractory inclusions have been discovered at micro- to nano-scales, including allendeite (Sc 4 Zr 3 O 12 ) and hexamolybdenum (Mo,Ru,Fe) ( Ma et al. 2009a ), monipite (MoNiP) ( Ma et al. 2009b ), tistarite (Ti 2 O 3 ) ( Ma and Rossman 2009a ), davisite (CaScAlSiO 6 ) ( Ma and Rossman 2009b...
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