Figure F4. Orthopyroxene-bearing gabbro (Thin Section 5; Sample 345-U1415G-1R-1, 21–26 cm [Piece 5]). Dark-colored minerals in B are pyroxenes consisting both of clinopyroxene (36%) and orthopyroxene (4%). Note the well-developed magmatic foliation defined by subparallel plagioclase (arrows in C). A. Core close-up. B. Plane-polarized light. C. Under crossed polars.
Previous | Close | Next | Top of page