This work is supported by the NSF through grant no. Processes of Garnet Nucleation, Growth and Dissolution with Progressive Metamorphism awarded to Dr. Frank Spear. This sample was collected from the staurolite zone.
Garnets are shown in magenta, staurolite is blue and plagioclase porphyroblasts are light yellow.
The image is approximately 1 cm x 1 cm x 2 cm. Notice the plagioclase and garnet intergrowths. This appears to be the replacement of garnet by plagioclase. Another interesting feature is the prefered alignment of the plagioclase porphyblasts. The plagioclase is aligned parallel to an intersection lineation.