Use Figure 6.18 to determine whether andalusite, kyanite, or ...

[elizabeth18]

Use Figure 6.18 to determine whether andalusite, kyanite, or sillimanite is stable under the following pressure (P) and temperature (T) conditions:
 
   P = 1 kb, T = 500 C
   P = 2 kb, T = 650 C
   P = 4 kb, T = 450 C
   P = 5 kb, T = 650 C
  What will be an ideal response?

Question 2

Metamorphic changes include a change in mineral content, or a change in texture, or both. Determine the type of metamorphic change for each of the metamorphic changes listed below.
 
   Shale metamorphoses into a schist
   Dolostone metamorphoses near an intrusion to a rock containing calcite and periclase
   Graphite metamorphoses into diamond
   Quartz sandstone metamorphoses into quartzite
   Limestone metamorphoses into marble
  What will be an ideal response?

[efwsefaw]

Answer to Question 1

P = 1 kb, T = 500 C Andalusite stable
P = 2 kb, T = 650 C Sillimanite stable
P = 4 kb, T = 450 C Kyanite stable
P = 5 kb, T = 650 C Sillimanite stable

Answer to Question 2

Shale metamorphoses into a schist. mineralogy and texture
Dolostone metamorphoses near an intrusion to a rock containing calcite and periclase. mineralogy
Graphite metamorphoses into diamond. mineralogy
Quartz sandstone metamorphoses into quartzite. texture
Limestone metamorphoses into marble. texture

[elizabeth18]

Wow, this really help

[helenmarkerine]

Thanks for the timely response, appreciate it