Alkali Feldspar Syenite Field 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.

afsyenite Field Photo

synfield_001. Alkali feldspar syenite in outcrop cut by black basalt dike that is crosscut by small syenite dikes, evidence that the basalt and syenite are co-magmatic. Field of view is about 25 cm. Lane's Cove, Cape Ann, MA, USA.

afsyenite Field Photo

synfield_001. Rust-stained alkali feldspar syenite (bottom) in contact with black basalt. The syenite-basalt contact is cut by a grey, quartz-rich, alkali feldspar granite (top). Field of view is about 25 cm. Lane's Cove, Cape Ann, MA, USA.