Petrology Study Questions: (Igneous)
Q1) What kind of magmas can be generated at destructive/convergent plate margin?
Describe the location of partial melting sites, the processes that lead to the
generation of melts, and the processes that might lead to
Geology 226 Final Review 2015
Optical Mineralogy #1
4 Basic Phenomena Processes
1. Scattering Tiny particles work as minute reflectors scattering light in all
directions (colour of the sky. Air molecules are 1/1000 of the size of the
wavelengths of ligh
has a crystal habit similar to a mica, but clean extinction.
amphibole! May see amphibole cleavage, but rare. One good cleavage usually observed.
pleochroic: pale to dark green in PPL.
just into 2nd order interference colours, but can