Lithium Silicate (Li2Si2O5) Li2O5Si2(cr,l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 100 200 298.15 138.072 125.520 125.520 0. -2560.901 -2416.848 423.422 300 138.909 126.377 125.523 0.256 -2560.946 -2415.954 420.655 400 174.891 171.701 131.457 16.098 -2561.976 -2367.401 309.151 500 192.673 212.726 143.694 34.516 -2567.627 -2318.171 242.178 600 205.685 249.062 158.287 54.466 -2566.295 -2268.388 197.481 700 214.890 281.479 173.613 75.507 -2564.136 -2218.898 165.576 800 222.589 310.685 188.951 97.387 -2561.408 -2169.759 141.671 900 229.492 337.312 203.978 120.000 -2558.215 -2120.990 123.099 1000 235.350 361.800 218.552 143.248 -2554.617 -2072.599 108.261 1100 240.617 384.483 232.618 167.052 -2550.660 -2024.585 96.140 1200 245.182 405.621 246.164 191.347 -2546.385 -1976.947 86.054 1209.000 245.559 407.454 247.358 193.556 I <--> II 1209.000 245.559 408.233 247.358 194.497 TRANSITION 1300 248.195 426.145 259.253 216.960 -2540.956 -1929.746 77.538 1307.000 248.417 427.478 260.150 218.698 II <--> LIQUID 1307.000 251.040 468.646 260.150 272.504 TRANSITION 1400 251.040 485.902 274.580 295.851 -2482.396 -1886.737 70.395 1500 251.040 503.222 289.252 320.955 -2477.759 -1844.353 64.226 1600 251.040 519.424 303.137 346.059 -2473.253 -1802.273 58.838 1700 251.040 534.643 316.312 371.163 -2859.704 -1745.226 53.624 1800 251.040 548.992 328.844 396.267 -2853.489 -1679.849 48.748 1900 251.040 562.565 340.791 421.371 -2847.336 -1614.814 44.394 2000 251.040 575.442 352.204 446.475 -2841.245 -1550.102 40.485 2100 251.040 587.690 363.129 471.579 -2835.217 -1485.694 36.955 2200 251.040 599.368 373.603 496.683 -2829.253 -1421.569 33.752 2300 251.040 610.527 383.664 521.787 -2823.356 -1357.717 30.835 2400 251.040 621.212 393.341 546.891 -2817.526 -1294.119 28.166 2500 251.040 631.460 402.662 571.995 -2811.766 -1230.763 25.715 2600 251.040 641.306 411.652 597.099 -2806.078 -1167.635 23.458 2700 251.040 650.780 420.334 622.203 -2800.463 -1104.724 21.372 2800 251.040 659.910 428.729 647.307 -2794.925 -1042.020 19.439 2900 251.040 668.719 436.853 672.411 -2789.465 -979.515 17.643 3000 251.040 677.230 444.725 697.515 -2784.085 -917.194 15.970