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orthoferrosilite

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Journal Article
Published: 01 April 1997
European Journal of Mineralogy (1997) 9 (2): 245–254.
Journal Article
Published: 01 December 1996
European Journal of Mineralogy (1996) 8 (6): 1337–1345.
Journal Article
Published: 01 December 1978
American Mineralogist (1978) 63 (11-12): 1116–1136.
... ⋅ (Al 1 .81 Si 6 .19 )O 22 (OH) 2 The orthopyroxene is the first documented natural occurrence of orthoferrosilite of space group Pbca . Lattice parameters (A) and optical properties of the orthoferrosilite as compared to synthetic FeSiO 3 are a = 18.42 (18.42), b = 9.050 (9.078), c = 5.241 (5.237), γ...
Journal Article
Published: 01 February 1976
American Mineralogist (1976) 61 (1-2): 38–53.
...S. Sueno; M. Cameron; C. T. Prewitt Abstract The high-temperature crystal structure of orthoferrosilite (FeSiO 3 : space group Pbca ) has been examined using intensity data collected at 24°C, 400°C, 600°C, 800°C, 900°C, and 980°C. Structural changes between 24°C and 980°C were regular...
Image
V&#x2F;V  0  vs.  T  for orthoenstatite and <span class="search-highlight">orthoferrosilite</span> from data of previo...
Published: 01 June 2021
Figure 4. V/V 0 vs. T for orthoenstatite and orthoferrosilite from data of previous investigations and also current work. (Color online.)
Image
Variation of the O3-O3-O3 angles of <span class="search-highlight">orthoferrosilite</span> and high-temperature c...
Published: 01 January 2000
Figure 18. Variation of the O3-O3-O3 angles of orthoferrosilite and high-temperature clinoferrosilite with increasing temperature across the transition point (after Sueno et al. 1984 ).
Journal Article
Published: 01 June 1990
American Mineralogist (1990) 75 (5-6): 620–630.
... and orthoferrosilite, between augite and hedenbergite, and around Fe-rich pigeonite. Orthoferrosilite (Fs 92 En 4 Wo 4 ) forms partial rims on crystals that contain zoning from Mg-rich to Fe-rich orthopyroxene. Pigeonite, with Fe/(Mg + Fe) >0.70, crystallized on augite and ferroan augite or as separate interstitial...
Image
Linear thermal expansion coefficient of orthoenstatite along the series ort...
Published: 01 June 2021
Figure 6. Linear thermal expansion coefficient of orthoenstatite along the series orthoenstatite-orthoferrosilite.
Image
P – T  diagram showing the xenolith decompression path and the formation of...
Published: 01 June 2000
F ig . 8. P – T diagram showing the xenolith decompression path and the formation of clinoferrosilite. SEA = southeastern Australia; Ofs = orthoferrosilite; Pr = protopyroxene; Cfs = clinoferrosilite.
Image
Photographs and TESCAN Integrated Mineral Analyzer (TIMA) showing the textu...
Published: 01 December 2023
abbreviations: Act = actinolite, Ank = ankerite, Brc = brucite, Bt = biotite, Cal = calcite, Ccp = chalcopyrite, Chl = chlorite, Di = diopside, Grt = garnet, Ilm = ilmenite, Mag = magnetite, Ofs = orthoferrosilite, Pn = pentlandite, Po = pyrrhotite, Srp = serpentine, Sulf = sulfide, Ves = vesuvianite, Wo
Series: GSA Reviews in Engineering Geology
Published: 01 January 2007
DOI: 10.1130/2007.4118(08)
EISBN: 9780813758183
... form, dull glazed smooth surface, hollow and light. Contains fayalite, orthoferrosilite, anorthite, tridymite, cristobalite, glass ± magnetite. P2 (paralava) Gray color, with a ropy, lobate round or ellipsoidal shape, dull glazed luster, smooth surface, hollow and light. Contains fayalite...
FIGURES | View All (18)
Journal Article
Published: 01 February 1985
American Mineralogist (1985) 70 (1-2): 141–148.
... that the Opx–Cpx transitions of Fe-rich pyroxenes can be classified into three groups according to their differing thermal behavior and the orientational relationships between the two phases. Group I consists of the transition between orthoferrosilite and high clinoferrosilite, which is reversible, rapid...
Journal Article
Published: 01 April 1984
American Mineralogist (1984) 69 (3-4): 264–269.
...Shigeho Sueno; Mitsuyoshi Kimata; Charles T. Prewitt Abstract The crystal structure of high clinoferrosilite (FeSiO 3 ) with C 2/ c symmetry after the transition from orthoferrosilite at 1025°C was determined at 1050°C using a high-temperature four-circle diffractometer. The cell constants...
Journal Article
Published: 01 December 1981
American Mineralogist (1981) 66 (11-12): 1175–1182.
...Donald H. Lindsley Abstract The three-pyroxene assemblage orthoferrosilite (OFs)-pigeonite (Pig)-hedenbergite (Hd ss ) is stable on the CaFeSi 2 O 6 –Fe 2 Si 2 O 6 join at pressures above 11.5 kbar and below approximately 20 kbar. It is found at 825±10°C (11.5 kbar) and at 855±10°C (15 kbar...
Image
Adiabatic bulk and shear elastic moduli determined from this experiment (di...
Published: 01 June 2009
Fig. 6. Adiabatic bulk and shear elastic moduli determined from this experiment (diamonds) along with previous results (squares) for the orthoenstatite-orthoferrosilite solid solution series. Note that K S was fixed in our study (see text). Symbols and reference numbers have the same meaning
Image
Topology of the  Pbca  pyroxenes. ( a ) ZnSiO 3  at room conditions. The Zn...
Published: 01 April 2003
) Orthoferrosilite, FeSiO 3 , at room conditions. The Fe2 atom is bonded to two bridging O3 atoms, and the topology around the M2 site is similar to that observed around a six-coordinated M2 site in P 2 1 /c pyroxenes as illustrated in Figure 6b .
Image
Topology of the phase diagram for (Mg,Fe)SiO 3  and the pressure-temperatur...
Published: 01 August 2019
= orthoferrosilite; HPCFs = high-pressure clinoferrosilite; LPCFs = low-pressure clinoferrosilite; Wad = wadsleyite; St = stishovite; Rwd = ringwoodite. (Color online.)
Journal Article
Published: 01 June 2000
Mineralogical Magazine (2000) 64 (3): 469–479.
...F ig . 8. P – T diagram showing the xenolith decompression path and the formation of clinoferrosilite. SEA = southeastern Australia; Ofs = orthoferrosilite; Pr = protopyroxene; Cfs = clinoferrosilite. ...
FIGURES | View All (8)
Journal Article
Published: 01 August 2019
American Mineralogist (2019) 104 (8): 1173–1179.
... = orthoferrosilite; HPCFs = high-pressure clinoferrosilite; LPCFs = low-pressure clinoferrosilite; Wad = wadsleyite; St = stishovite; Rwd = ringwoodite. (Color online.) ...
FIGURES | View All (6)
Journal Article
Published: 01 July 2003
European Journal of Mineralogy (2003) 15 (4): 689–695.
... of the pyroxene phases ( Angel et al. , 1992 , Hugh-Jones et al. , 1994 ). Mao & Bell (1971) obtained high-pressure spectra of polycrystalline orthoferrosilite FeSiO 3 at P up to ∼9 GPa and performed experiments on a single crystal at pressures to 2.5 GPa. Later on it was found that Pbca → C2/c...
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