Question

Page 1

Schreinemakers Problem#2
The diagram at right shows two reactions in the MgO-Al2O3-SiO2 system.The reactions are NOT
balanced.
Py=pyrope=Mg3Al2Si3O12
Sp=spinel=MgAl2O4
En=enstatite=MgSiO3
Sil=sillimanite=Al2SiOs
Cd=cordierite=Mg2Al4SisO18
Your job is:
1.Are any of the reactions degenerate?
2.Construct a Schreinemakers analysis of this invariant point.Draw all reactions in the proper
positions.Label both sides of each reaction and label the curves using parentheses to
show which phases are absent.You may omit metastable parts of reaction lines.
Reactions:
Sil Py Cd En Sp
Sil Py Cd En Sp
Rxn 1
1
10
5
Rxn2
5
5
2
Rxn 3
5
2
Rxn 4
1
Rxn 5 3
5
2/2
－​

Answer 1

Answer:

I have don't understand your questions