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farringtonite

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Journal Article
Published: 01 April 1996
European Journal of Mineralogy (1996) 8 (2): 349–354.
Journal Article
Published: 01 June 1985
American Mineralogist (1985) 70 (5-6): 624–629.
...Anders G. Nord; Tore Ericsson Abstract Solid solutions, mainly with the composition (Zn 0.70 Fe 0.25 Me 0.05 ) 3 (PO 4 ) 2 , have been analyzed by 57 Fe Mössbauer spectroscopy (Me = Mg, Mn, Fe, Co, Ni, Cd or Ca). The structure is isomorphous with “ γ -Zn 3 (PO 4 ) 2 ” and with farringtonite (Mg 3...
Journal Article
Published: 01 October 1973
American Mineralogist (1973) 58 (9-10): 949–951.
...Louis H. Fuchs; Edward Olsen; Elizabeth Gebert Abstract New data for the meteoritic mineral farringtonite indicates that it is essentially Mg 3 (PO 4 ) 2 with some Fe 2+ substitution for Mg but with less than 0.05 wt percent Si substitution for P. Farringtonite has a = 8.79, b = 8.22, c = 5.07 Å β...
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The crystal structures of <span class="search-highlight">farringtonite</span> and beusite: (a) <span class="search-highlight">farringtonite</span> proj...
Published: 01 January 2002
Figure 46. The crystal structures of farringtonite and beusite: (a) farringtonite projected onto (001); (b) farringtonite projected onto (010); (MgO 6 ) octahedra are shadow-shaded, (MgO 5 ) polyhedra are line-shaded; (c) a layer of the beusite structure projected onto (100); (d) another layer
Journal Article
Published: 01 February 2010
American Mineralogist (2010) 95 (2-3): 260–272.
... backscatter diffraction patterns and maps, together with chemical analyses and Fe-Mg-Mn distribution among phosphates, confirm identification of the orthophosphate as sarcopside, chopinite, and farringtonite; no graftonite was found. Phosphates are found as (1) narrow rims between metal and forsterite...
FIGURES | View All (13)
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Back-scattered electron (BSE) images of fayalitic rims on forsterite in GRA...
Published: 01 February 2010
exposed by fragmentation of the section. ( b ) Contrast-enhanced, brightened, and enlarged portion of BSE image enclosed in white frame in a to bring out M-shaped area of farringtonite (Table 6 ). ( c ) Map of the M-shaped area of farringtonite obtained by electron backscatter diffraction (Table 1
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Compositions (mole proportions) of (Mg,Fe,Mn) 3 (PO 4 ) 2  phases analyzed ...
Published: 01 February 2010
in composition to grains so characterized. However, the identity of one composition (queried farringtonite) is richer in Fe than other farringtonite. Data for type chopinite and terrestrial compositions are from Grew et al. (2007) supplemented by analyses of sarcopside and graftonite in a sample from the Bull
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BSE images. Springwater contains abundant phosphoran olivine (shaded in red...
Published: 01 October 2015
of farringtonite in matrix ( a ) with predominantly metal matrix ( b ). Phases indicated are olivine (ol), taenite and kamacite (Fe-Ni), farringtonite (far), troilite (tro), stanfieldite (sta), and schreibersite (scb). (Locations marked 2a, 2b, and 2c correspond to Fig. 2 .)
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( a ) Variation of Mn/Fe ratio with  X  Mg  = Mg/(Mg+Fe) ratio in chladniit...
Published: 01 February 2010
(e.g., Fig. 6b ). The identity of one composition (queried farringtonite) is richer in Fe than other farringtonite. Sources of data: Floss (1999) ; T. McCoy (personal communication 2005); McCoy et al. (2006) ; this study.
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Thermal expansion of MgAlPO 4 O and <span class="search-highlight">farringtonite</span> at 0.1 Mpa.
Published: 01 March 2007
Fig. 6. Thermal expansion of MgAlPO 4 O and farringtonite at 0.1 Mpa.
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Compressibility of α′-MgAlPO 4 O and <span class="search-highlight">farringtonite</span>, Mg 3 (PO 4 ) 2 , at roo...
Published: 01 March 2007
Fig. 8. Compressibility of α′-MgAlPO 4 O and farringtonite, Mg 3 (PO 4 ) 2 , at room temperature (MAX80 data).
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Maximum binary ranges in mol% Fe 3 (PO 4 ) 2  and Mn 3 (PO 4 ) 2  for compo...
Published: 01 February 2010
F igure 1. Maximum binary ranges in mol% Fe 3 (PO 4 ) 2 and Mn 3 (PO 4 ) 2 for compositions of (Mg,Fe,Mn) 3 (PO 4 ) 2 (orthophosphate) structures obtained by synthesis. Farringtonite at 1 bar, 800°C ( Annersten et al. 1980 ; Nord and Stefanidis 1980), Mn-Fe sarcopside at 200–800 bars, 300°C
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Thermal expansion of α′-MgAlPO 4 O and <span class="search-highlight">farringtonite</span> (Mg 3 (PO 4 ) 2 ) at 1...
Published: 01 March 2007
Fig. 7. Thermal expansion of α′-MgAlPO 4 O and farringtonite (Mg 3 (PO 4 ) 2 ) at 1.7(2) GPa (Max80 data).
Image
Back-scattered electron images of phosphates in GRA95209. ( a ) Chladniite ...
Published: 01 February 2010
F igure 5. Back-scattered electron images of phosphates in GRA95209. ( a ) Chladniite rim between metal and plagioclase plus enstatite, PTS, 39, area 1–8. ( b ) Chladniite and farringtonite in rim near forsterite, PTS, 39, area 5 ( c ) Forsterite with fayalite rim against chladniite
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Stability field of MgAlPO 4 O and results of bracketing experiments of the ...
Published: 01 March 2007
Fig. 9. Stability field of MgAlPO 4 O and results of bracketing experiments of the reaction 3 MgAlPO 4 O ⇔ farringtonite + berlinite + corundum. α-β transition of berlinite according to Cohen & Klement (1973) .
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( a ) Percent of overgrowths observed in contact with <span class="search-highlight">farringtonite</span>, stanfi...
Published: 01 October 2015
Figure 3 ( a ) Percent of overgrowths observed in contact with farringtonite, stanfieldite, metal, troilite, and schreibersite, as compared with the expected profile assuming a random distribution of overgrowths (based on the estimated relative abundances of each phase at host olivine grain
Journal Article
Published: 01 March 2007
European Journal of Mineralogy (2007) 19 (2): 159–172.
...Fig. 6. Thermal expansion of MgAlPO 4 O and farringtonite at 0.1 Mpa. ...
FIGURES | View All (13)
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Heat capacity of MgAlPO 4 O and <span class="search-highlight">farringtonite</span>, Mg 3 (PO 4 ) 2 , measured in...
Published: 01 March 2007
Fig. 5. Heat capacity of MgAlPO 4 O and farringtonite, Mg 3 (PO 4 ) 2 , measured in the interval-scanning mode (DSC, open circles) and using PPMS (triangles). The endothermic peak at 754 K corresponds to the β″- α′ phase transformation of MgAlPO 4 O.
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Feasibility region for the reaction 3 MgAlPO 4 O ⇔ <span class="search-highlight">farringtonite</span> + β-berlin...
Published: 01 March 2007
Fig. 13. Feasibility region for the reaction 3 MgAlPO 4 O ⇔ farringtonite + β-berlinite + corundum. The feasibility region is defined by the elongated polygon between the intersections A, B and C. Inserted diagram: determination of the enthalpy of formation using the PPMS value for the third-law
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Plot of natural <span class="search-highlight">farringtonite</span>, graftonite, sarcopside, and chopinite compos...
Published: 01 March 2007
Fig. 2. Plot of natural farringtonite, graftonite, sarcopside, and chopinite compositions in terms of the divalent cations excluding Ca. The fields for terrestrial graftonite (dashed line) and sarcopside (solid line) are largely from intergrowths ( Černý et al. , 1998 ; Corbella i Cordomí