Exercise 5.8 insights from melting experiments name: course: section date: -- results from melting experiments explain several aspects of igneous rock texture and composition. remember that crystallization is the exact opposite of melting. answer the following questions (a) the figure below shows textural features displayed by plagioclase feldspar (left) and pyroxene and amphibole (right) found in many igneous rocks. considering the continuous and discontinuous legs of bowen's reaction series, suggest an explanation for the origin of these textures photomicrographs of common mineral textures in igneous rocks compositionally zoned plagioclase feldspar with ca-rich core and progressively richer na rims pyroxene grain (px; dark green) with amphibole rim (am; light green). (b) from bowen's reaction series, is it likely that minerals with high melting points will occur in rocks with minerals with low melting points? explain 5.4 origin and evolution of magmas 121