- Page 1: CRYSTAL CHEMICAL AND STRUCTURAL ANA
- Page 5 and 6: DEDICATION This dissertation is ded
- Page 7 and 8: TABLE OF CONTENTS - Continued APPEN
- Page 9 and 10: ABSTRACT Natural and synthetic comm
- Page 11 and 12: Explanation of the Problem and its
- Page 13 and 14: (APPENDIX C), clinopyroxene (APPEND
- Page 15 and 16: etween observed structure and the m
- Page 17 and 18: close to 1.0 for Fa24 at room tempe
- Page 19 and 20: crystallization can provide useful
- Page 21 and 22: limit of ~ 25 kbars in the equilibr
- Page 23 and 24: isotopes (Zartman and Tera 1973). F
- Page 25 and 26: crystals are present (up to 1 cm) (
- Page 27 and 28: Downs (2001). I examined packing di
- Page 29 and 30: the substitution of Co for Mg resul
- Page 31 and 32: Figure 2. Two melting indicators, A
- Page 33 and 34: Fig. 3 cont. (b) (c) (d) 33
- Page 35 and 36: Fig. 3 cont. (h) (i) 35
- Page 37 and 38: REFERENCES Aoki, K. (1975) Origin o
- Page 39 and 40: Princivalle, F., Della Giusta, A.,
- Page 41 and 42: APPENDIX A: INVESTIGATION OF SYNTHE
- Page 43 and 44: (XEDS) suggested that the Mg-rich i
- Page 45 and 46: The presence of a small amount of c
- Page 47 and 48: However, the inclusions were too sm
- Page 49 and 50: Turner (1968). The refined paramete
- Page 51 and 52: is occupied, the nearest octahedral
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the observed tetrahedral bond dista
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length because of its low abundance
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Devanathan, R., Yu, N., Sickafus, K
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Nowell, M.M. and Wright, S.I. (2004
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Figure 1. BSE images of (a) the sel
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Figure 2. XEDS maps and statistics.
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Figure 3. EBSD patterns of (a) spin
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Figure 5. Two possible structural i
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Table 1. Chemical composition of Mg
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Table 3. Comparison of refinement r
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APPENDIX B: AN APPARENT SYMMETRY P6
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Additionally, the same crystal from
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displacive transformation between P
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1955) and later in most kalsilite (
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temperatures on a Bruker X8 APEX si
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oxygen, O1, and assigning O1 off th
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layers was on the 3-fold axis. This
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ecame more perpendicular to the c a
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Downs, R.T. (2000) Analysis of harm
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Figure 1. Unit-cell volume changes
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c-c o 0.06 0.04 0.02 0.00 -0.02 -0.
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Table 1. Chemical composition (wt%)
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Table 3. Summary of crystal data an
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Table 4. Refinement results at room
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Table 4. cont. ====================
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Table 4. cont. ====================
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Single-crystal X-ray diffraction of
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to the host basalt but rather they
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O and T-O bond distances (u = 0.262
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temperature of TQ onto the equilibr
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higher value of Rw, but it insures
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would rigidly constrain the optimiz
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these three figures. In addition to
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Closure temperatures, Tc, for our s
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Bond distances, T-O vs. M-O, are pl
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Finger, L.W. and Prince, E. (1975)
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diffraction study of MgAl2O4 at tem
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Figure 1. Chemistry of spinels from
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129
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131
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Figure 4. Closure temperatures vers
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Figure 6. Bond distances, M-O vs. T
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Table 2. Structural refinement resu
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Table 2. cont. Sample SC 1 SC 11 SC
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Table 4. Cation distribution, inver
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Table 4. cont. Sample Occ T Occ M F
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APPENDIX D: CRYSTAL CHEMISTRY OF CL
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effect on Ucp in case of clinopyrox
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Pyroxene is an important mineralogi
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and M polyhedra (VT and VM, respect
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Ganguly 2003). Liermann and Ganguly
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crystal chemistry of those samples.
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Experimental Crystals were selected
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of both xenoliths types. The absenc
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temperature and pressure for the sa
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elationships among geometrical para
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We examined the datasets to find th
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Figure 6 shows a correlation betwee
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References Basu, A.R. and MacGregor
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Galer, S.J.G. and O’Nions, R.K. (
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Princivalle, F., Salviulo, G., Fabr
- Page 175 and 176:
Witt-Eickschen, G. and Seck, H.A. (
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Figure 2. Estimated pressure and te
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(b) 179
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(b) 181
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Figure 6. Correlation between Ucp (
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Table 1. Chemical composition of th
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Table 2. cont. SC19 SC1 SC11 a (Å)
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Table 3. cont. SC19 SC1 SC11 M1 y 0
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Table 5. Pressure and temperature e
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Investigation of distortions from i
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ideal geometry. For olivine, while
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and shown to have a widely ranging
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this viewpoint gave meaningful resu
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201 After the X-ray data collection
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Discussion (1) Relationship between
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NiMgSiO4 (Henderson et al. 2001), F
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increases. As Thompson and Downs (2
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correlated with the average radii o
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211 We have shown in Uchida et al.
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Belokoneva, E.L., Ivanov, Y.A., Sim
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Kimata, M. and Nishida, N. (1987) T
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Smyth, J.R. (1975) High-temperature
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Figure 2. x coordinate vs. y coordi
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Figure 4. Ucp (Å 2 ) as a function
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Ucp 0.075 0.070 0.065 (b) Ucp = 0.0
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Figure 7. Changes in lengths of O-O
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Table 1. Chemical composition of th
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Table 2. cont. SC19 SC1-2 SC11-4 SC
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Table 3.cont. SC8 SC2 SC19 SC1-2 SC
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Table 4. Ucp of selected silicate a