# Last edited on 2018-11-11 01:57:41 by stolfilocal
# MgO MgCl2 H2O phase diagram

#From newer reference

A = (530,70)  # MgO ; M = 40.3
B = (191,651) # H2O ; M = 18.0
G = (510,651) # MgCl2(H2O)6 ; M = 203.2

C = -1.134*B + 2.134*G # MgCl2; M = 95.2

D = 0.308*A + 0.692*B # = (426,248) Mg(OH)2 ; M = 58.3

E = 0.549*D + 0.271*B + 0.179*C # = (442,430) Phase 5
F = 0.422*D + 0.348*B + 0.230*C # = (446,480) Phase 3

P = 0.008*A + 0.822*B + 0.170*C # = (310,646) Satsol Mg(OH)2:Phase5
Q = 0.010*A + 0.768*B + 0.222*C # = (347,646) Satsol Phase5:Phase3
R = 0.012*A + 0.643*B + 0.345*C # = (430,645) Satsol Phase3:MgCl2(H2O)6

X = 0.172*A + 0.691*B + 0.137*C # = (342,551) Gelpoint 1
Y = 0.184*A + 0.597*B + 0.219*C # = (402,544) Gelpoint 2

# h=; v=; a=191; b=651; c=869; d=70; r=sqrt(3)/2; y=(b-v)/(b-d); z=(h-a)/(c-a) - y/2; x=1-y-z; x;y;z 


The solution in equilibrium with MgO and 5.1.8 was  placed at 
0.8 wt% MgO, 17.0 wt% MgCl2, 82.2 wt% H2O; 
the solution in equilibrium with 5.1.8 and 3.1.8 
was  placed at  1.0 wt% MgO, 22.2 wt%  MgCl2, 76.8 wt% H2O; 
and the solution in equilibrium with 3.1.8 and MgCl2.6H20 was  placed  at 
1.2 wt% MgO, 34.5 wt% MgCl2, 64.3 wt% H2O. 



# From older reference

A = (214,35) # MgO
B = (49,319) # H2O
C = (379,319) # MgCl2
D = 0.308*A + 0.692*B # = (162,122) Mg(OH)2
E = 0.549*D + 0.271*B + 0.179*C # = (170,212) Phase 5 = 5 Mg(OH)2 + MgCl2 + 8 H2O
F = 0.422*D + 0.348*B + 0.230*C # = (174,237) Phase 3 = 3 Mg(OH)2 + MgCl2 + 8 H2O
G = (204,319) # MgCl2(H2O)6
K = (168,176) Phase 9
L = (179,254) Phase 2
150,211 Optimum

122,270 Gel 1
154,268 Gel 2

MgO 40.3
H2O 18.0
MgCl2 95.2
Mg(OH)2 58.3

Mg(OH)2 = 18.0/(18.0 + 40.3) = 0.308

Phase 5 = a=5*58.3; b=8*18.0; c=1*95.2; t=a+b+c; a/t; b/t; c/t = (0.457, 0.327. 0.216)
.54927454305634068211
.27133973996608253250
.17938571697757678537

Phase 3 = a=3*58.3; b=8*18.0; c=1*95.2; t=a+b+c; a/t; b/t; c/t = (0.457, 0.327. 0.216)
.42236174836995894711
.34774209128229896160
.22989616034774209128