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![(a) The average of seven nixonite diffraction patterns after background correction is shown in black, while the blue pattern is the sum of all peaks that could be indexed as nixonite. This diffraction pattern was used to refine the unit-cell parameters of nixonite reported in the text. (b) Comparison between calculated nixonite diffraction pattern (green) and the sum of all peaks that could be indexed as nixonite (blue). The calculated diffraction pattern was produced by refining the lattice parameters from the masked diffraction pattern and a starting structure revised from synthetic Na2Ti6O13 (space group C2/m). (c) Comparison between the calculated nixonite pattern (green), the average of DB1–DB7 after applying background correction (black) and the reference patterns of rutile: calculated from PowderCell (Kraus and Nolze 1996) using the structure from Swope et al. (1995), in red; and of priderite: calculated from PowderCell using the structure from Post et al. (1982), in purple. All of the peaks can be indexed by nixonite, rutile, and priderite. (Color online.)]()
![False-color (16 shades) X-ray intensity maps. (a) K map showing priderite, nixonite, and freudenbergite. (b) Na map displaying nixonite and freudenbergite in the reaction rim. Dark red shows the zone where nixonite is the most abundant. (Color online.)]()
![(a) X-ray diffraction patterns of nixonite at positions D1-D7, shown in Figure 1, before background correction and subtraction of other phases (N = nixonite, P = priderite, R = rutile). (b) X-ray diffraction patterns of nixonite at positions D1–D7, shown in Figure 1, after background correction and subtraction of other phases. (Color online.)]()
![(a) Backscattered image of rutile grain with complex reaction rim containing nixonite (in five locations), priderite, freudenbergite, ilmenite, and perovskite; (b and c) portions of the rutile grain; (d) nixonite area in which (e) a Na EDS map and (f) an EBSD pattern were collected. The EBSD pattern acquired from the Na-rich area was indexed in the same crystal system as jeppeite, confirming that nixonite is the Na-dominant form of jeppeite. Black dots and black squares indicate where Raman spectra and diffraction patterns were collected, respectively. (Color online.)]()
![Example 2D X-ray diffraction image of nixonite collected at spot D2 in Figure 1 and corresponding to diffraction pattern DB2 in Figure 4. The diffraction pattern was collected with monochromatic synchrotron radiation (λ = 0.434 Å) focused to a spot size of 20 μm (vertical) by 15 μm (horizontal) at beamline 13-BMC (GSECARS) of the Advanced Photon Source, Argonne National Lab. The spotty nature of the 2D diffraction pattern in this configuration suggests the nixonite grain size is on the order of 1–2 μm.]()
![Raman spectra of nixonite (black) at five different positions labeled R1–R5 in Figure 1, and the spectrum of Na2Ti6O13 (red), synthesized at 800 to 1200 °C by Bamberger and Begun (1987). (Color online.)]()
![Fluorescence spectrum of nixonite acquired at position R2 (Fig. 1), excited by the 458 nm laser used for Raman spectroscopy. The extinction of light at around 900 nm is due to second-order diffraction by the 458 nm holographic notch filter and is thus an artifact of the spectroscopic system. The observed peaks below 500 nm correspond to Raman scattering. (Color online.)]()
![Crystal structure of nixonite (a) viewed obliquely down the b axis, showing the corrugated chains of (3-wide) edge-shared octahedra that extend along the b axis. (b) Viewed along the a axis. (c) Viewed along the b axis. (d) Viewed along the c axis. Oxygen atoms are represented in red, titanium-centered octahedra in blue, and sodium and potassium in yellow and purple, respectively. In d, it is evident that chains of Ti-centered octahedra are parallel to the b axis. (Color online.)]()
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1-14 OF 14 RESULTS FOR
nixonite
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Journal Article
Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 September 2019
American Mineralogist (2019) 104 (9): 1336–1344.
...Chiara Anzolini; Fei Wang; Garrett A. Harris; Andrew J. Locock; Dongzhou Zhang; Fabrizio Nestola; Luca Peruzzo; Steven D. Jacobsen; D.Graham Pearson Abstract Nixonite (IMA 2018-133), ideally Na 2 Ti 6 O 13 , is a new mineral found within a heavily metasomatized pyroxenite xenolith from the Darby...
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Image
( a ) The average of seven nixonite diffraction patterns after background c... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 5. ( a ) The average of seven nixonite diffraction patterns after background correction is shown in black, while the blue pattern is the sum of all peaks that could be indexed as nixonite. This diffraction pattern was used to refine the unit-cell parameters of nixonite reported in the text
Image
False-color (16 shades) X-ray intensity maps. ( a ) K map showing priderite... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 3. False-color (16 shades) X-ray intensity maps. ( a ) K map showing priderite, nixonite, and freudenbergite. ( b ) Na map displaying nixonite and freudenbergite in the reaction rim. Dark red shows the zone where nixonite is the most abundant. (Color online.)
Image
( a ) X-ray diffraction patterns of nixonite at positions D1-D7, shown in ... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 4. ( a ) X-ray diffraction patterns of nixonite at positions D1-D7, shown in Figure 1 , before background correction and subtraction of other phases (N = nixonite, P = priderite, R = rutile). ( b ) X-ray diffraction patterns of nixonite at positions D1–D7, shown in Figure 1 , after
Image
( a ) Backscattered image of rutile grain with complex reaction rim contain... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 1. ( a ) Backscattered image of rutile grain with complex reaction rim containing nixonite (in five locations), priderite, freudenbergite, ilmenite, and perovskite; ( b and c ) portions of the rutile grain; ( d ) nixonite area in which ( e ) a Na EDS map and ( f ) an EBSD pattern were
Image
Example 2D X-ray diffraction image of nixonite collected at spot D2 in Fig... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 2. Example 2D X-ray diffraction image of nixonite collected at spot D2 in Figure 1 and corresponding to diffraction pattern DB2 in Figure 4 . The diffraction pattern was collected with monochromatic synchrotron radiation (λ = 0.434 Å) focused to a spot size of 20 μm (vertical) by 15 μm
Image
Raman spectra of nixonite (black) at five different positions labeled R1–R5... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 7. Raman spectra of nixonite (black) at five different positions labeled R1–R5 in Figure 1 , and the spectrum of Na 2 Ti 6 O 13 (red), synthesized at 800 to 1200 °C by Bamberger and Begun (1987) . (Color online.)
Image
Fluorescence spectrum of nixonite acquired at position R2 ( Fig. 1 ), excit... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 8. Fluorescence spectrum of nixonite acquired at position R2 ( Fig. 1 ), excited by the 458 nm laser used for Raman spectroscopy. The extinction of light at around 900 nm is due to second-order diffraction by the 458 nm holographic notch filter and is thus an artifact of the spectroscopic
Image
Crystal structure of nixonite ( a ) viewed obliquely down the b axis, sho... Available to Purchase
in Nixonite, Na 2 Ti 6 O 13 , a new mineral from a metasomatized mantle garnet pyroxenite from the western Rae Craton, Darby kimberlite field, Canada
> American Mineralogist
Published: 01 September 2019
Figure 6. Crystal structure of nixonite ( a ) viewed obliquely down the b axis, showing the corrugated chains of (3-wide) edge-shared octahedra that extend along the b axis. ( b ) Viewed along the a axis. ( c ) Viewed along the b axis. ( d ) Viewed along the c axis. Oxygen atoms
Journal Article
New minerals and nomenclature modifications approved in 2019 Available to Purchase
Journal: Mineralogical Magazine
Published: 01 April 2019
Mineralogical Magazine (2019) 83 (2): 315–317.
...; Mineralogical Magazine , 83 , 315–317. IMA No. 2018-133 Nixonite Na 2 Ti 6 O 13 Darby kimberlite field, beneath the west central Rae Craton, ca. 200 km SW of the community of Kugaaruk, Nunavut, Canada (67°23’56.6”N, 93°21’13.9”W) Chiara Anzolini*, Fei Wang, Garrett A. Harris, Andrew J...
Journal Article
IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 48 New minerals and nomenclature modifications approved in 2019 Open Access
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 March 2019
European Journal of Mineralogy (2019) 31 (2): 399–402.
...) shows a cation ordering, leading to the end-member formula YFe 3+ Nb 2 O 8 . Nixonite Na 2 Ti 6 O 13 Darby kimberlite field, beneath the west central Rae Craton, ca. 200 km SW of the community of Kugaaruk, Nunavut, Canada (67°23′56.6″N, 93°21′13.9″W) Chiara Anzolini*, Fei Wang, Garrett...
Journal Article
Heamanite-(Ce), (K 0.5 Ce 0.5 )TiO 3 , a new perovskite supergroup mineral found in diamond from Gahcho Kué, Canada Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 2022
American Mineralogist (2022) 107 (8): 1635–1642.
... of metasomatized mantle material (e.g., Haggerty et al. 1994 ; Giuliani et al. 2012 ), whereas the Na-rich analog of jeppeite, nixonite, was recently discovered ( Anzolini et al. 2019 ), also coexisting with priderite and freudenbergite, in a reaction rim around rutile ( Harris et al. 2018 ). This reaction...
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Journal Article
An evolutionary system of mineralogy, Part VIII: The evolution of metamorphic minerals Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 October 2024
American Mineralogist (2024) 109 (10): 1760–1784.
... nixonite , Na 2 Ti 6 O 13 ; Anzolini et al. 2019 ) are familiar minerals in other environments. Shear-induced minerals (SHE; p43 ): Minerals that form while experiencing significant shear strain represent a distinct metamorphic paragenetic mode in our system. Shear-induced mineralization is most...
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Journal Article
On the paragenetic modes of minerals: A mineral evolution perspective Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 July 2022
American Mineralogist (2022) 107 (7): 1262–1287.
... of which (nixonite, Na 2 Ti 6 O 13 ; Anzolini et al. 2019 ) are well known from other environments. [#42–Seafloor nodules]. Seafloor nodules are enigmatic Mn- and Fe-rich concretions with significant Ni, Cu, and Co content that form extensive (and potentially economic) deposits on some regions...
