Alkali Feldspar Syenite Thin Section Photos. Click on any photo for a larger image. Some of the larger images may be on other web sites and will open in a new window.

Missing Thin Section

afsynts_001. Alakli Feldspar Syenite, Salem, MA (CAP-96-3). Microperthite, Fe-rich amphibole, and Fe-rich biotite. The amphibole and biotite are very dark and the image has been brightened to show their brown colors.