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Journal Article
Published: 01 June 2022
American Mineralogist (2022) 107 (6): 1018–1029.
...Lixin Gu; Sen Hu; Mahesh Anand; Xu Tang; Jianglong Ji; Bin Zhang; Nian Wang; Yangting Lin Abstract We report on the discovery of two high-pressure minerals, tuite and ahrensite, located in two small shock-induced melt pockets (SIMP 1 and 2) in the Zagami martian meteorite, coexisting with granular...
FIGURES | View All (9)
Journal Article
Published: 01 March 2016
European Journal of Mineralogy (2016) 28 (1): 125–136.
... are heavily deformed with an angular mosaicity reaching 7 degrees. The latter imply that the mineral grains experienced a shock event but the impact pressure was not high enough (<23 GPa) for the transformation to tuite, γ-Ca 3 (PO 4 ) 2 , to occur. Ferromerrillite is colourless, no cleavage was observed...
FIGURES
Journal Article
Published: 01 October 2013
American Mineralogist (2013) 98 (10): 1811–1816.
...Shuangmeng Zhai; Daisuke Yamazaki; Weihong Xue; Lijin Ye; Chaowen Xu; Shuangming Shan; Eiji Ito; Akira Yoneda; Takashi Yoshino; Xinzhuan Guo; Akira Shimojuku; Noriyoshi Tsujino; Ken-Ichi Funakoshi Abstract Tuite, γ-Ca 3 (PO 4 ) 2 , is regarded as an important phosphate mineral in the deep mantle...
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Journal Article
Published: 01 August 2013
American Mineralogist (2013) 98 (8-9): 1585–1592.
...Richard M. Thompson; Xiande Xie; Shuangmeng Zhai; Robert T. Downs; Hexiong Yang Abstract Tuite, the high-pressure γ-form of the Ca 3 (PO 4 ) 2 system, has been synthesized from chlorapatite at 15 GPa and 1300 °C using a multi-anvil apparatus. Its crystal structure was determined with single-crystal...
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Journal Article
Published: 01 November 2003
European Journal of Mineralogy (2003) 15 (6): 1001–1005.
...Xiande XIE; Michelle E. MINITTI; Ming CHEN; Ho-Kwang MAO; Deqiang WANG; Jinfu SHU; Yingwei FEI Abstract Tuite, γ-Ca 3 (PO 4 ) 2 , the high-pressure polymorph of whitlockite, was found in a shock melt vein of the Suizhou chondrite. It occurs as polycrystalline aggregates in association with coarse...
FIGURES
Image
Petrographic textures of FIB foil sample of melt pocket 1 (foil 1). ( a ) S...
Published: 01 June 2022
Figure 4. Petrographic textures of FIB foil sample of melt pocket 1 (foil 1). ( a ) SEM image of cross-section after extraction. The tuite aggregate is enclosed by silicate glasses containing some euhedral silica grains showing darker contrast. ( b ) HAADF image of tuite aggregate
Image
BSE images of apatite and associated <span class="search-highlight">tuite</span> in Suizhou. ( a – c ) Apatite in...
Published: 01 November 2018
Figure 1. BSE images of apatite and associated tuite in Suizhou. ( a – c ) Apatite in the host. ( d – f ) Apatite and tuite in the vicinity of the SMVs, and the polycrystalline domains of W-ap ( d and f ) delineated by dashed lines. ( g ) Tuite included in a majorite fragment of the SMVs
Image
Petrography of shock-induced melt pocket 1 (SIMP 1). ( a ) SIMP 1 is locate...
Published: 01 June 2022
at higher magnification in ( b, c , and d ). ( b ) Acicular stishovite grains in the upper left corner outlined in a . ( c ) High-magnification BSE image of the silica grain showing lamellar texture. ( d ) Tuite aggregate in SIMP 1. Foil 1 is the location for FIB-TEM analysis. ( e ) Details of white
Image
HAADF image ( a ) and EDS elemental mapping of Fe ( b ), Cl ( c ), Ca ( d )...
Published: 01 June 2022
Figure 5. HAADF image ( a ) and EDS elemental mapping of Fe ( b ), Cl ( c ), Ca ( d ), P ( e ), Al ( f ), Mg ( g ), Si ( h ), and O ( i ) of tuite aggregate in foil 1 outlined by the white rectangle in Figure 4b . The bright particles in a are probably iron oxides ( b ), which are mainly
Image
( a ) The A′ layer in <span class="search-highlight">tuite</span>. ( b ) The A layer in <span class="search-highlight">tuite</span>.
Published: 01 August 2013
Figure 10 ( a ) The A′ layer in tuite. ( b ) The A layer in tuite.
Journal Article
Journal: PALAIOS
Published: 15 September 2022
PALAIOS (2022) 37 (9): 486–498.
...KELSEY R. MOORE; THEODORE M. PRESENT; FRANK PAVIA; JOHN P. GROTZINGER; JOSEPH RAZZELL HOLLIS; SUNANDA SHARMA; DAVID FLANNERY; TANJA BOSAK; MICHAEL TUITE; ANDREW H. KNOLL; KENNETH WILLIFORD Abstract The preservation of organic biosignatures during the Proterozoic Eon required specific taphonomic...
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Journal Article
Published: 01 August 2022
American Mineralogist (2022) 107 (8): 1652–1655.
... in SO 3 (2.03 wt%). Merrillite from lower-mantle diamonds may be a retrograde phase of the tuite [γ-Ca 3 (PO 4 ) 2 ]. Owing to their crystal structures, both merrillite and tuite may be important potential hosts for rare earth elements (REE) and large ion lithophile elements (LILE), including Sr and Ba...
FIGURES
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Typical X-ray diffraction patterns of <span class="search-highlight">tuite</span> obtained in the present study. ...
Published: 01 October 2013
Figure 3 Typical X-ray diffraction patterns of tuite obtained in the present study. Abbreviations indexed to the diffraction peaks: T = tuite, γ-Ca 3 (PO 4 ) 2 ; Au = gold; * = X-ray fluorescence of Au; M = MgO from the pressure medium; TB = TiB 2 heater.
Image
P-T  constraints revealed by the formation of <span class="search-highlight">tuite</span>, ahrensite, and stishov...
Published: 01 June 2022
Figure 9. P-T constraints revealed by the formation of tuite, ahrensite, and stishovite in Zagami meteorite. Black line is the phase diagram of MgSiO 3 ( Gasparik 1990 ). Blue lines show the stability fields of F- and OH-apatite ( Murayama et al. 1986 ). Orange dashed line is the boundary
Image
Enlarged BSE image showing two <span class="search-highlight">tuite</span> grains surrounded by fine-grained matr...
Published: 01 November 2003
Fig. 2. Enlarged BSE image showing two tuite grains surrounded by fine-grained matrix and coexisted with other high-pressure minerals. Tu = Tuite, Rgt = Ringwoodite, Mjt = Majorite, Hit = NaAlSi 3 O 8 -hollandite, Matrix = Fine-grained matrix consisting of majorite-pyrope garnet in solid solution
Journal Article
Journal: Geology
Published: 01 October 2013
Geology (2013) 41 (10): 1079–1082.
...Michael L. Tuite, Jr.; Stephen A. Macko Abstract The depleted nitrogen isotope values observed in Devonian black shales have been ascribed to the dominant role of marine diazotrophic N fixation in providing new reactive N for the productivity that generated the organic matter preserved...
FIGURES
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Calculated density profiles of <span class="search-highlight">tuite</span> along the typical geotherms of cold (t...
Published: 01 October 2013
Figure 8 Calculated density profiles of tuite along the typical geotherms of cold (thick solid line) and hot (dashed line) slabs ( Thompson 1992 ) as a function of pressure. The density profiles of some coexisting silicate minerals and their sequent phases are also calculated for comparison
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Raman spectra of stishovite ( a ), intergrowth of stishovite and seifertite...
Published: 01 June 2022
Figure 3. Raman spectra of stishovite ( a ), intergrowth of stishovite and seifertite ( b ), tuite ( c ), apatite ( d ), and host pyroxene ( e ) marked in Figure 2 .
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Raman spectra of various phases marked in  Figure 6 . ( a ) pigeonite (R28)...
Published: 01 June 2022
Figure 7. Raman spectra of various phases marked in Figure 6 . ( a ) pigeonite (R28), ( b ) augite (R27), ( c ) ahrensite (R24), ( d ) tuite (R23), and ( e ) stishovite (R22).
Image
The packing arrangement of <span class="search-highlight">tuite</span>.
Published: 01 August 2013
Figure 9 The packing arrangement of tuite.