synts_001. Syenite thin section in plane polarized light (ppl). Microcline with a microperthitic texture and augite with exsolution lamellae of low-Ca pyroxene. Sample from the Kiglapait Layered Intrusion, Northeast Coast of Labrador, Canada. Upper Zone (UZ) sample, approximately 99.975 percent solidified (PCS). (KI-4062) S.A. Morse Collection, Smith College.

synts_002. Syenite thin section in plane polarized light (ppl). Microcline with a microperthitic texture and augite with exsolution lamellae of low-Ca pyroxene. Sample from the Kiglapait Layered Intrusion, Northeast Coast of Labrador, Canada. Upper Zone (UZ) sample, approximately 99.985 percent solidified (PCS). (KI-4084) S.A. Morse Collection, Smith College.

synts_003. Syenite thin section in plane polarized light (ppl). Microcline with a microperthitic texture and augite with exsolution lamellae of low-Ca pyroxene. Sample from the Kiglapait Layered Intrusion, Northeast Coast of Labrador, Canada. Upper Zone (UZ) sample, approximately 99.99 percent solidified (PCS). (KI-3173) S.A. Morse Collection, Smith College.

synts_004. Ben Loyal Syenite, Cnoc nan Cùilean intrusion, near Loch Loyal Scotland. This syenite contains green aegirine-augite pyroxene, orthoclase, euhedral titanite, and other minor accessory minerals. Image from the UK Virtual Microscope.