Abor Sub
19
liquid eutectic miscibility gap solvus melting T of albite melting T of orthoclase 400 500 700 900 600 800 1000 Or Ab 20 40 60 80 100 0 KAlSi O 3 8 NaAlSi O 3 8 Temperature °C % Ab KAlSi O -NaAlSi O System at 500 MPa (5 Kbar) 3 8 3 8 single K- feldspar solid solution single Na- feldspar solid solution two feldspars
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Transcript of Abor Sub
liquid
eutectic
miscibility gap
solvus
melting Tof albite
melting Tof orthoclase
400
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
% Ab
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
single K-feldspar
solidsolution
single Na-feldspar
solidsolution
two feldspars
liquid
400
500
700
900
600
800
850
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
% Ab
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
100% liquid
400
liquid
500
700
900
600
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
800
liquidAb Or49 51
100% liquid
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
750
liquidAb Or49 51
100% liquid
400
liquid
500
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
700
liquidAb Or49 51
100% liquid
675
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
liquidAb Or53 47K-feldspar
Ab Or09 91
91% liquid9% K-feldspar
650
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
liquidAb Or59 41K-feldspar
Ab Or14 86
75% liquid25% K-feldspar
625
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
liquidAb Or64 36K-feldspar
Ab Or21 79
65% liquid35% K-feldspar
600
400
liquid
500
700
900
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
liquidAb Or68 32K-feldspar
Ab Or40 60
32% liquid68% K-feldspar
595
400
liquid
500
700
900
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
K-feldsparAb Or45 55
89% K-feldspar11% Na-feldspar
Na-feldsparAb Or82 18
590
400
liquid
500
700
900
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
85% perthite15% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18K-feldspar
Ab Or
(exsolution)43 57
Na-feldsparAb Or
(exsolution)84 16
perthite contains5% exsolution
lamellae
antiperthite contains5% exsolution
lamellae
575
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
79% perthite21% antiperthite
perthite contains14% exsolution
lamellae
antiperthite contains12% exsolution
lamellae
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18K-feldspar
Ab Or
(exsolution)38 62
Na-feldsparAb Or
(exsolution)87 13
550
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
70% perthite30% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
perthite contains22% exsolution
lamellae
antiperthite contains14% exsolution
lamellae
K-feldsparAb Or
(exsolution)32 68
Na-feldsparAb Or
(exsolution)90 10
525
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
67% perthite33% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
perthite contains27% exsolution
lamellae
antiperthite contains16% exsolution
lamellae
K-feldsparAb Or
(exsolution)26 74
Na-feldsparAb Or
(exsolution)93 07
500
400
liquid
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
67% perthite33% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
perthite contains31% exsolution
lamellae
antiperthite contains18% exsolution
lamellae
K-feldsparAb Or
(exsolution)22 78
Na-feldsparAb Or
(exsolution)95 05
475
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
61% perthite39% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
perthite contains32% exsolution
lamellae
antiperthite contains18% exsolution
lamellae
K-feldsparAb Or
(exsolution)19 81
Na-feldsparAb Or
(exsolution)96 04
450
400
liquid
500
700
900
600
800
1000
Or
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
60% perthite40% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
perthite contains35% exsolution
lamellae
antiperthite contains19% exsolution
lamellae
K-feldsparAb Or
(exsolution)17 83
Na-feldsparAb Or
(exsolution)97 03
425
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
60% perthite40% antiperthite
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
perthite contains36% exsolution
lamellae
antiperthite contains19% exsolution
lamellae
K-feldsparAb Or
(exsolution)15 85
Na-feldsparAb Or
(exsolution)98 02
400
liquid
500
700
900
600
800
1000
Or Ab
20 40 60 80 1000
KAlSi O3 8 NaAlSi O3 8
Tem
pe
ratu
re°C
KAlSi O -NaAlSi O System at 500 MPa (5 Kbar)3 8 3 8
singlefeldspar
singlefeldspar
two feldspars
K-feldsparAb Or
(exsolution)14 86
Na-feldsparAb Or
(exsolution)98 02
89% perthite11% antiperthite
perthite contains37% exsolution
lamellae
antiperthite contains20% exsolution
lamellae
PerthiteAb Or
(overall)45 55
AntiperthiteAb Or
(overall)82 18
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