CaO-Al2O3-SiO2
New end-members in this subsystem are laumontite, wairakite, heulandite and stilbite. Enthalpies for these end-members have been derived using the experiments of Cho et al. (1987), Liou (1970, 1971a,b), and Thompson (1970). Entropies were estimated using the technique of Holland (1989) to derive an entropy contribution of 29.0 J/K per mole of zeolitic H2O.
Data for the clinozoisite-epidote solid solution and for the clinozoisite--orthozoisite transition are improved since HP90. The experiments of Jenkins et al. (1983) on the reaction 2cz + ky + q = 4an + H2O together with the experiments of Liou (1973) and Holdaway (1972) on 4cz + q = 5an + gr + H2O and the new activity model for epidotes allow retrieval of an enthalpy of formation for clinozoisite which is consistent with the experiments of Holland (1984) and a preliminary survey of coexisting clino- and orthozoisite assemblages from nature.
Thermodynamic data for meionite, especially its entropy, are now very much better constrained through the experiments of Baker & Newton (1994) on the reactions 3an + cc = me and gr + cc + 2ky + q = me. Their brackets for the first reaction agree with, but are tighter than the older data of Goldsmith & Newton (1977). Constraints on lawsonite stability have been augmented by the experiments of Schmidt & Poli (1994) on the reaction 2law + dsp = zo + ky + 4H2O, and those of Skrok et al. (1994) on the reaction 4law = 2zo+ ky + coe + 7H2O.
Although the data set agrees with almost all the experimental reactions available in this system, several problem equilibria still remain. Of the two available reactions involving prehnite, the brackets of Chatterjee et al. (1984) for pre = an + wo + H2O and those of Connolly & Kerrick (1985) for 5pre = 2zo + 2gr + 3q + 4H2O are mutually inconsistent. It is not at all clear which of the two competing studies should be chosen, and future experimental work will be required to resolve this discrepancy. The brackets of Hoschek (1974) on the reaction wo + cc + an = gr + CO2, the experiments of Allen & Fawcett (1982) on the reaction 2zo + CO2 = 3an + cc + H2O, and the experiments on the reaction cc + q + and/ky = an + CO2 (Jacobs & Kerrick, 1981) currently cannot be fitted closely with the data set.
82) cz = zo (Holland, unpub)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 6.0 325 375 -0.79 -0.44 373 78 1 (-0.56 <-> -0.45)
0 - 15.0 350 500 -0.57 0.76 369 98 cH = -0.46 (sd 0.31) 2
within bracket
uH = 0.03, d/s = 1.9, h = 0.82
83) gr + 2ky + q = 3an (Koziol & Newton, 1987; Goldsmith, 1980)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 25.3 24.9 1150 38.83 41.24 24.98 0.20 3 (36.62 <-> 43.51)
0 - 23.2 22.8 1050 37.43 39.86 -0.15 22.65 0.20 cH = 40.75 (sd 0.61)
0 - 24.3 23.2 1100 37.81 44.46 23.81 0.20 within bracket
0 - 22.3 21.3 1000 35.87 41.98 21.50 0.20 uH = 2.92, d/s = 0.0, h = 0.26
0 - 20.3 18.8 900 34.08 43.33 19.22 0.20
0 - 21.1 20.3 950 36.19 41.10 20.36 0.20
0 - 24.0 22.0 1100 39.62 51.74 23.81 0.20
0 - 26.0 24.0 1150 34.63 46.66 24.98 0.20
0 - 26.7 25.8 1200 37.52 42.90 26.16 0.20
0 - 28.2 27.1 1250 35.68 42.21 27.35 0.20
0 - 27.0 25.0 1200 35.72 47.69 26.16 0.20
0 - 28.0 26.0 1250 36.86 48.77 27.35 0.20
0 - 29.0 27.0 1300 38.05 49.91 28.54 0.20
* gr + 2ky + q = 3an (Gasparik, 1984; Hays, 1967)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 26.4 25.3 1200 39.31 45.89 26.16 0.20 ** NOT USED **
0 - 28.2 27.3 1300 42.79 48.13 0.34 28.54 0.20 cH = 40.75 (sd 0.61)
0 - 27.0 23.0 1200 35.72 59.71 26.16 0.20
0 - 29.0 28.0 1300 38.05 43.97 28.54 0.20
0 - 32.0 30.0 1400 34.78 46.49 30.98 0.21
84) gr + q = an + 2wo (Huckenholz et al., 1975; Newton, 1966; Hays, 1967; Windom & Boettcher, 1976)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 2.0 565 585 52.45 53.88 578 8 3 (52.92 <-> 54.06)
0 - 3.0 615 635 52.81 54.23 623 8 cH = 53.37 (sd 0.29)
0 - 4.0 665 685 53.16 54.57 668 8 within bracket
0 - 4.7 695 725 53.06 55.17 699 8 uH = 0.41, d/s = 0.9, h = 0.72
0 - 6.3 5.4 750 51.88 54.72 5.83 0.18
0 - 14.5 13.5 1100 51.23 54.31 13.80 0.19
0 - 16.1 11.6 1100 46.32 60.20 13.80 0.19
0 - 17.0 15.3 1200 50.77 55.97 16.15 0.19
85) gr + cor = geh + an (Boettcher, 1970; Huckenholz et al., 1975)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 1.0 760 780 98.92 100.98 761 14 3 (100.22 <-> 101.90)
0 - 5.0 930 950 100.08 102.13 -11 919 16 cH = 98.99 (sd 0.77) 2
0 - 6.0 975 995 100.65 102.70 -16 959 16 too low but OK
uH = 0.61, d/s = 0.3, h = 0.41
86) 2gr = 3wo + geh + an (Huckenholz et al., 1975; Hays, 1967)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 1.0 880 900 162.83 165.88 899 12 3 (162.25 <-> 164.99)
0 - 2.0 920 940 162.75 165.79 940 12 cH = 165.73 (sd 0.86) 2
0 - 3.0 960 985 162.69 166.49 980 12 too high but OK
0 - 7.5 1120 1150 159.58 164.15 10 1160 12 uH = 0.98, d/s = 0.7, h = 0.28
0 - 10.2 1240 161.57 1267 12
0 - 8.8 1210 165.43 2 1212 12
0 - 10.0 7.5 1200 156.68 171.78 8.50 0.29
0 - 11.0 9.0 1250 158.30 170.33 9.76 0.29
87) gr + 2cor = 3cats (Gasparik, 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 12.8 11.3 1170 71.85 73.97 11.58 0.53 3 (72.90 <-> 74.24)
0 - 15.5 14.4 1230 72.25 73.78 14.55 0.54 cH = 73.57 (sd 0.37)
0 - 17.0 15.9 1270 72.96 74.48 16.56 0.54 within bracket
0 - 18.1 16.9 1300 73.54 75.20 18.08 0.54 uH = 0.57, d/s = 0.2, h = 0.97
0 - 23.7 22.5 1400 72.97 74.58 23.25 0.56
0 - 29.3 28.2 1500 72.64 74.07 28.58 0.57
88) gr + 3ky = 3an + cor (Gasparik, 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 28.2 27.4 1300 46.02 51.11 27.92 0.19 2 (44.31 <-> 52.82)
0 - 30.7 29.8 1400 45.65 51.31 30.36 0.20 cH = 47.81 (sd 0.61)
within bracket
uH = 3.61, d/s = 0.7, h = 0.04
89) gr + 3cats = 2an + 2geh (Hays, 1967)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 14.9 13.9 1300 119.15 125.62 14.09 0.49 1 (119.49 <-> 125.28)
cH = 124.40 (sd 1.55) 2
within bracket
uH = 1.98, d/s = 1.6, h = 0.06
90) 3cats = an + geh + cor (Hays, 1967)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 13.9 10.9 1200 19.83 27.47 11.71 0.67 1 (24.70 <-> 26.70)
0 - 13.0 11.8 1250 23.76 26.81 12.35 0.67 cH = 25.41 (sd 0.83) 2
0 - 14.0 12.0 1350 24.48 29.55 13.63 0.68 within bracket
0 - 14.6 13.0 1400 24.59 28.62 14.27 0.68 uH = 0.69, d/s = 1.6, h = 0.18
91) gr + 3ky = 3an + cor (Gasparik, 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 28.3 27.3 1300 45.39 51.74 27.92 0.19 2 (44.31 <-> 52.82)
0 - 30.8 29.7 1400 45.02 51.94 30.36 0.20 cH = 47.81 (sd 0.61)
within bracket
uH = 3.61, d/s = 0.9, h = 0.03
92) 3an + cc = me (Baker & Newton, 1994)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 1.5 847 860 63.95 64.67 854 10 3 (63.98 <-> 64.70)
0 - 3.6 848 63.85 857 10 cH = 64.34 (sd 0.30)
0 - 3.2 865 64.82 856 10 within bracket
0 - 6.7 853 63.90 861 10 uH = 0.28, d/s = 1.2, h = 0.99
0 - 7.2 873 64.96 862 10
0 - 15.0 865 880 64.00 64.81 871 10
* 3an + cc = me (Goldsmith & Newton, 1977)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 1.0 850 900 64.15 66.92 853 10 ** NOT USED **
0 - 5.0 850 900 63.85 66.61 859 10 cH = 64.34 (sd 0.30)
0 - 8.0 850 900 63.64 66.39 863 10
0 - 10.0 850 875 63.50 64.87 865 10
0 - 15.0 850 900 63.18 65.90 871 10
93) gr + cc + 2ky + q = me (Baker & Newton, 1994)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 19.7 900 103.38 909 6 3 (101.78 <-> 108.79)
0 - 23.0 22.1 1000 102.38 107.93 22.56 0.21 cH = 105.09 (sd 0.67)
0 - 26.5 26.0 1100 100.36 103.40 -0.28 25.72 0.22 within bracket
0 - 29.4 1200 102.26 1215 6 uH = 2.97, d/s = 0.0, h = 0.06
0 - 27.5 1190 111.77 1156 6
0 - 26.6 1145 108.47 1128 6
94) 4zo + q = 5an + gr + 2H2O (Boettcher, 1970; Newton, 1966; Chatterjee et al., 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 4.0 570 610 207.80 216.50 580 4 3 (207.48 <-> 211.08)
0 0 5.3 630 660 207.50 213.89 642 4 cH = 210.06 (sd 0.48)
0 0 2.0 485 535 210.18 221.49 -1 484 4 within bracket
0 0 4.7 600 207.13 614 4 uH = 1.53, d/s = -0.7, h = 0.26
0 0 6.0 5.5 650 204.76 209.75 -0.03 5.47 0.10
0 0 7.5 6.8 720 204.70 211.53 6.95 0.10
0 0 2.0 480 510 209.05 215.83 484 4
0 0 5.1 610 640 205.23 211.65 633 4
0 0 6.0 660 670 206.87 208.98 5 675 4
0 0 8.0 740 760 204.00 208.10 10 770 4
95) 4zo + q = 5an + gr + 2H2O (Newton, 1966)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 4.6 600 640 208.15 216.76 609 4 3 (207.16 <-> 211.73)
0 0 6.0 650 700 204.76 215.29 675 4 cH = 210.06 (sd 0.48)
0 0 8.0 740 770 204.00 210.14 770 4 within bracket
uH = 1.64, d/s = 0.6, h = 0.05
96) 6zo = 6an + 2gr + cor + 3H2O (Boettcher 1970; Newton 1965; Chatterjee et al., 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 3.0 620 665 299.04 311.26 630 6 3 (301.07 <-> 305.11)
0 0 2.0 570 585 299.29 303.52 579 6 cH = 301.78 (sd 0.78)
0 0 4.1 670 700 297.73 305.64 685 6 within bracket
0 0 4.6 700 730 299.11 306.90 710 6 uH = 1.71, d/s = 0.1, h = 0.61
0 0 5.6 765 795 303.06 310.62 -5 760 6
0 0 6.1 785 815 301.84 309.32 785 6
0 0 6.8 815 845 300.68 308.04 819 6
0 0 2.0 560 590 296.48 304.93 579 6
0 0 4.0 680 690 301.69 304.33 680 6
0 0 8.0 870 890 299.61 304.39 879 6
97) 2cz + ky + q = 4an + H2O (Jenkins et al., 1983)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 7.5 7.1 550 120.54 123.77 -0.09 7.01 0.18 1 (120.29 <-> 124.03)
cH = 124.49 (sd 0.71)
too high but OK
uH = 1.57, d/s = 1.0, h = 0.11
98) 4cz + q = 5an + gr + 2H2O (Liou, 1973)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
6.19 0 3.0 670 694 208.24 214.46 670 10 1 (208.74 <-> 213.96)
cH = 208.23 (sd 1.30) 2
too low but OK
uH = 1.61, d/s = 1.9, h = 0.05
99) 4cz + q = 5an + gr + 2H2O (Holdaway, 1972)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
6.19 0 3.0 690 710 213.42 218.66 -20 670 10 1 (213.68 <-> 218.40)
cH = 208.23 (sd 1.30) 2
too low
uH = 1.63, d/s = 1.6, h = 0.06
100) 2zo + ky + q = 4an + H2O (Goldsmith, 1981; Jenkins et al., 1983; Johannes, 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 4.0 3.0 400 118.99 127.28 3.22 0.09 3 (122.17 <-> 126.43)
0 0 5.0 4.2 450 119.70 126.26 4.30 0.10 cH = 125.41 (sd 0.39)
0 0 6.0 510 530 122.26 125.81 528 4 within bracket
0 0 5.0 450 490 119.70 126.84 482 4 uH = 1.81, d/s = 0.3, h = 0.20
0 0 7.8 7.0 580 120.16 126.57 7.14 0.10
0 0 7.0 550 580 121.28 126.57 573 4
0 0 8.0 570 625 116.80 126.47 619 4
0 0 9.0 650 675 122.89 127.25 664 4
0 0 10.0 705 725 124.57 128.02 710 4
0 0 10.3 695 725 120.49 125.67 723 4
101) 2zo + sill + q = 4an + H2O (Newton, 1966; Newton & Kennedy, 1963)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 7.5 7.0 550 111.54 115.27 -0.39 6.61 0.11 3 (113.86 <-> 117.75)
0 0 9.2 8.6 650 115.32 119.74 8.81 0.11 cH = 118.17 (sd 0.40)
0 0 9.3 7.7 620 109.71 121.53 8.15 0.11 too high but OK
0 0 10.0 670 730 112.71 122.37 704 4 uH = 1.45, d/s = -0.0, h = 0.08
102) ma = an + cor + H2O (Chatterjee, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 1.0 470 500 90.14 92.71 477 4 3 (90.46 <-> 91.43)
0 0 2.0 500 520 90.24 91.85 506 4 cH = 90.71 (sd 0.17)
0 0 4.0 560 570 90.87 91.63 -2 558 4 within bracket
0 0 6.0 600 610 90.31 91.03 606 4 uH = 0.41, d/s = 0.2, h = 0.31
0 0 7.0 620 640 90.10 91.53 628 4
* ma = an + cor + H2O (Storre & Nitsch, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 3.0 510 530 88.96 90.51 3 533 4 ** NOT USED **
0 0 5.0 570 590 89.82 91.30 582 4 cH = 90.71 (sd 0.17)
0 0 7.0 620 660 90.10 92.95 628 4
* ma + q = an + and + H2O (Storre & Nitsch, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 4.0 490 540 84.25 87.98 540 4 ** NOT USED **
0 0 5.0 515 560 84.09 87.38 9 569 4 cH = 88.01 (sd 0.17)
* ma + q = an + ky + H2O (Storre & Nitsch, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 5.0 530 570 81.48 84.04 564 6 ** NOT USED **
0 0 7.0 580 600 82.24 83.47 3 603 6 cH = 83.65 (sd 0.16)
0 0 9.0 640 660 83.70 84.89 -1 639 6
103) 4ma + 3q = 2zo + 5ky + 3H2O (Jenkins, 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 9.0 10.0 500 204.50 208.58 0.15 10.15 0.29 3 (208.16 <-> 210.28)
0 0 8.4 10.0 550 205.48 211.77 9.36 0.30 cH = 209.19 (sd 0.58)
0 0 8.4 9.0 600 208.82 211.06 8.50 0.33 within bracket
0 0 7.7 8.3 650 209.66 211.76 -0.14 7.56 0.36 uH = 0.76, d/s = -0.7, h = 0.67
* ma + q = an + and + H2O (Nitsch et al., 1981)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 2.0 440 460 84.76 86.33 21 481 4 ** NOT USED **
0 0 4.0 510 520 85.74 86.49 20 540 4 cH = 88.01 (sd 0.17)
0 0 5.0 560 570 87.38 88.11 569 4
* ma + q = an + ky + H2O (Nitsch et al., 1981)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 6.0 575 585 83.10 83.73 584 6 ** NOT USED **
0 0 7.0 590 600 82.86 83.47 3 603 6 cH = 83.65 (sd 0.16)
104) 4ma = 2zo + 2ky + 3cor + 3H2O (Chatterjee et al., 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 12.0 540 226.86 580 14 1 (227.19 <-> 229.95)
0 0 13.0 550 230.74 546 14 cH = 230.37 (sd 0.59)
0 0 10.0 600 640 226.63 230.29 1 641 14 too high but OK
uH = 0.76, d/s = 2.3, h = 0.13
105) law = an + 2H2O (Crawford & Fyfe, 1965)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 6.9 400 450 145.33 152.35 448 4 1 (148.91 <-> 151.96)
0 0 6.0 4.5 400 148.52 154.04 5.02 0.13 cH = 152.08 (sd 0.25)
0 0 5.5 375 147.25 413 2 too high but OK
uH = 0.79, d/s = 2.4, h = 0.02
106) 4law + 2q = 2zo + prl + 6H2O (Nitsch, 1972)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 7.0 370 430 405.00 422.92 386 4 1 (406.22 <-> 421.69)
cH = 409.65 (sd 0.95)
within bracket
uH = 1.76, d/s = 5.1, h = 0.01
* 12law = 6zo + 2ky + prl + 20H2O (Nitsch, 1972)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 4.0 340 375 1379.92 1417.51 -4 336 4 ** NOT USED **
0 0 7.0 390 430 1375.05 1416.17 391 4 cH = 1375.50 (sd 2.78)
107) 5law = 2zo + ma + 2q + 8H2O (Nitsch, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 4.0 325 355 553.34 567.37 -4 321 4 3 (550.03 <-> 557.31)
0 0 7.0 370 400 547.44 559.14 380 4 cH = 551.36 (sd 1.16)
0 0 10.0 415 445 541.75 555.17 437 6 within bracket
uH = 2.61, d/s = 0.4, h = 0.12
108) 2law + dsp = zo + ky + 4H2O (Schmidt & Poli, 1994)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 16.0 510 540 278.77 284.79 510 4 5 (277.17 <-> 280.93)
0 0 22.0 550 580 273.33 279.03 579 6 cH = 278.84 (sd 0.47)
0 0 28.5 630 660 275.39 280.73 649 6 within bracket
0 0 33.0 710 725 281.18 283.72 -14 696 6 uH = 1.38, d/s = -0.8, h = 0.16
0 0 36.0 740 281.01 727 6
109) 4law = 2zo + ky + q + 7H2O (Schmidt & Poli, 1994; Chatterjee et al., 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 16.0 510 550 478.67 492.43 522 6 3 (478.60 <-> 485.15)
0 0 22.0 580 475.98 602 6 cH = 482.93 (sd 0.92)
0 0 21.5 598 483.87 595 6 within bracket
0 0 19.0 545 577 477.16 487.80 562 6 uH = 2.35, d/s = 1.1, h = 0.06
0 0 14.0 480 550 477.57 502.19 495 6
110) 4law = 2zo + ky + q + 7H2O (Newton & Kennedy, 1963)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 13.5 500 487.09 488 6 3 (480.99 <-> 486.69)
0 0 17.5 540 550 482.10 485.48 542 6 cH = 482.93 (sd 0.92)
0 0 21.5 590 481.29 595 6 within bracket
0 0 25.0 640 650 482.85 485.95 640 6 uH = 2.42, d/s = 0.5, h = 0.26
0 0 29.5 660 720 471.76 489.54 698 6
0 0 33.5 730 760 477.82 486.33 748 8
111) 4law = 2zo + ky + coe + 7H2O (Skrok et al., 1994)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 19.0 565 595 487.39 497.28 568 6 3 (483.47 <-> 490.78)
0 0 24.0 615 645 483.59 492.97 630 6 cH = 488.29 (sd 0.92)
0 0 28.5 670 705 483.89 494.30 685 6 within bracket
0 0 33.0 720 750 482.97 491.51 739 8 uH = 2.65, d/s = -0.8, h = 0.28
0 0 38.0 770 805 480.71 490.20 798 8
0 0 43.0 820 855 478.75 487.82 2 857 8
0 0 47.5 855 890 474.66 483.40 20 910 10
* pre = an + wo + H2O (Chatterjee et al., 1984)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 0.5 410 430 89.76 91.59 23 453 4 ** NOT USED **
0 0 1.0 430 460 90.11 92.77 12 472 4 cH = 93.82 (sd 0.19)
0 0 2.0 460 470 90.14 90.98 33 503 4
0 0 4.0 500 520 88.87 90.47 42 562 4
0 0 5.0 530 540 89.14 89.93 49 589 4
112) 5pre = 2zo + 2gr + 3q + 4H2O (Connolly & Kerrick, 1985)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 1.0 410 430 228.36 231.15 427 8 5 (229.66 <-> 231.65)
0 0 2.0 407 427 229.44 231.87 417 6 cH = 230.65 (sd 0.51)
0 0 4.0 380 400 232.57 233.78 -24 356 6 within bracket
uH = 0.58, d/s = -1.2, h = 1.00
113) wrk = an + 2q + 2H2O (Liou, 1970)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 1.0 340 355 125.00 126.23 18 373 6 4 (127.17 <-> 128.34)
0 0 2.0 365 380 126.83 127.88 377 8 cH = 127.67 (sd 0.40) 2
0 0 3.0 365 390 126.95 128.56 376 8 within bracket
0 0 4.3 375 405 128.11 129.88 -7 368 8 uH = 0.35, d/s = -3.6, h = 0.52
0 0 5.0 380 400 128.78 129.85 -18 362 8
114) lmt = an + 2q + 4H2O (Thompson, 1970)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 1.0 300 320 245.34 248.83 304 2 3 (243.54 <-> 245.74)
0 0 2.0 307 327 243.72 247.01 322 2 cH = 246.12 (sd 0.34) 2
0 0 4.0 328 348 242.53 245.53 4 352 2 too high but OK
0 0 6.0 337 357 240.45 243.24 22 379 4 uH = 0.79, d/s = -1.3, h = 0.05
115) lmt = wrk + 2H2O (Liou, 1971)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 0.5 220 240 118.05 119.81 225 4 5 (118.11 <-> 119.38)
0 0 1.0 250 260 119.26 120.14 -9 241 4 cH = 118.45 (sd 0.40) 2
0 0 2.0 274 284 118.59 119.44 -2 272 4 within bracket
0 0 3.0 294 301 117.62 118.20 3 304 4 uH = 0.44, d/s = -4.3, h = 0.54
0 0 5.0 316 328 114.49 115.42 41 369 8
116) law + 2q + 2H2O = lmt (Liou, 1971)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 3.0 2.8 200 -93.06 -92.67 0.49 3.49 0.26 4 (-94.22 <-> -93.80)
0 0 3.5 3.0 250 -94.48 -93.54 3.27 0.28 cH = -94.04 (sd 0.27) 2
0 0 3.5 3.2 300 -95.04 -94.51 -0.28 2.92 0.31 within bracket
uH = 0.13, d/s = -5.8, h = 0.85
117) law + 2q = wrk (Liou, 1971)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 - 3.2 312 23.92 7 319 12 3 (23.14 <-> 24.25)
0 - 3.5 305 333 22.16 24.09 5 338 12 cH = 24.41 (sd 0.40) 2
0 - 4.0 355 365 23.47 24.16 4 369 12 too high but OK
0 - 4.3 381 23.98 387 12 uH = 0.47, d/s = -0.1, h = 0.16
118) heu = lmt + 3q + 2H2O (Cho et al., 1987)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 1.5 160 190 113.27 115.38 178 12 1 (113.87 <-> 115.21)
0 0 2.0 160 190 113.70 115.77 172 12 cH = 114.54 (sd 1.32) 2
within bracket
uH = 0.35, d/s = 2.4, h = 1.00
119) stlb = lmt + 3q + 3H2O (Liou, 1971)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0 2.0 178 171.15 12 190 8 5 (171.50 <-> 173.34)
0 0 3.0 170 198 170.46 173.40 189 8 cH = 172.42 (sd 1.39) 2
0 0 4.0 175 205 171.28 174.39 186 8 within bracket
0 0 5.0 173 195 171.55 173.73 182 8 uH = 0.51, d/s = -0.4, h = 1.00
120) 3cc + an + cor = 2geh + 3CO2 (Shmulovich, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 1 0.5 790 830 367.83 380.35 820 10 1 (372.47 <-> 377.60)
0 1 0.7 835 855 372.03 378.04 852 12 cH = 377.18 (sd 1.68) 2
within bracket
uH = 1.62, d/s = 1.9, h = 0.10
121) 2cc + an = wo + geh + 2CO2 (Shmulovich, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 1 0.5 840 860 236.13 239.91 4 864 10 2 (236.02 <-> 238.84)
0 1 0.7 870 890 235.11 238.74 11 901 10 cH = 240.71 (sd 0.89) 2
too high
uH = 1.01, d/s = 1.3, h = 0.12
* wo + cc + an = gr + CO2 (Hoschek, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.37 1.0 715 38.38 -37 678 28 ** NOT USED **
0 0.30 1.0 735 40.24 631 26 cH = 37.49 (sd 0.34)
0 0.52 1.0 815 38.10 -33 782 36
0 0.45 1.0 835 39.59 732 32
0 0.13 4.0 715 40.00 -111 604 30
0 0.10 4.0 735 42.24 549 26
0 0.23 4.0 815 37.90 -30 785 48
0 0.18 4.0 835 39.96 691 36
* an + cor + 3cc = 2geh + 3CO2 (Hoschek, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.31 1.0 765 367.08 796 10 ** NOT USED **
0 0.27 1.0 785 376.61 2 787 10 cH = 377.18 (sd 1.68)
0 0.63 1.0 815 367.31 848 12
0 0.56 1.0 835 376.23 3 838 10
* 2an + 3cc = geh + gr + 3CO2 (Hoschek, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.42 1.0 790 266.73 844 10 ** NOT USED **
0 0.34 1.0 810 275.70 11 821 10 cH = 278.20 (sd 1.08)
* an + 2cc = geh + wo + 2CO2 (Hoschek, 1974)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.64 1.0 840 230.49 896 10 ** NOT USED **
0 0.57 1.0 865 237.01 20 885 10 cH = 240.71 (sd 0.89)
0 0.85 1.0 860 895 229.16 235.35 31 926 10
* 2zo + CO2 = 3an + cc + H2O (Allen & Fawcett, 1982)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.07 5.0 590 38.09 652 16 ** NOT USED **
0 0.08 5.0 610 39.85 22 632 14 cH = 40.86 (sd 0.34)
0 0.16 5.0 492 37.91 548 12
0 0.19 5.0 505 39.39 27 532 12
0 0.11 5.0 540 38.46 589 14
0 0.12 5.0 560 39.93 19 579 14
122) cc + q + and = an + CO2 (Chernosky & Berman, 1991)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.74 1.0 338 366 80.19 83.50 338 6 3 (81.85 <-> 83.58)
0 0.68 2.0 392 412 81.86 84.10 -15 377 6 cH = 80.19 (sd 0.35) 2
0 0.53 2.0 399 83.53 370 6 too low
0 0.82 2.0 409 82.91 384 6 uH = 0.62, d/s = 0.5, h = 0.04
0 0.17 2.0 364 82.27 -16 348 6
0 0.21 2.0 379 83.57 352 6
* cc + q + and = an + CO2 (Jacobs & Kerrick, 1981)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.27 2.0 390 410 84.26 86.69 -33 357 6 ** NOT USED **
0 0.69 2.0 440 460 87.15 89.37 -62 378 6 cH = 80.19 (sd 0.35)
* cc + q + ky = an + CO2 (Jacobs & Kerrick, 1981)
ln_K x(CO2) P(kbar) T(C) H(low) H(high) miss calc 2sd summary
0 0.17 6.0 490 510 85.80 88.31 -10 480 6 ** NOT USED **
0 0.75 6.0 565 585 89.06 91.20 -42 523 6 cH = 84.55 (sd 0.35)
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