f syenite HS

Foid Syenite Hand Sample 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.

Foid Syenite Hand Sample

fsynhs_001. Nepheline Syenite from Salem Neck, Essex County, Massachusetts. This sample is a yellowish gray granular rock composed mainly of feldspar and nepheline. Geologic Age is Early Carboniferous.

Foid Syenite Hand Sample

fsynhs_002. Nepheline-sodalite Syenite from Ditrău, Romania. Blue sodalite, gray nepheline, and white alkali feldspar are visible. Specimen width is 6.8 cm. Image from the The Museum of Mineralogy and Petrography Grigore Cobalcescu on Sketchfab.

Foid Syenite Hand Sample

fsynhs_003. Nepheline syenite. Nepheline forms aggregates of brownish crystals. The light gray mineral, with excellent cleavage and tabular shape, is micropertitic K-feldspar. Albite (white) is also present. Specimen width is 10 cm. Image from the Dipartimento di Scienze della Terra - Università degli Studi di Torino on Sketchfab.

Foid Syenite Hand Sample

fsynhs_004. Nepheline syenite from Red Hill, NH. Perthitic alkali feldspar, nepheline, and hornblende (ferrohastingsite) are visible. Cenitmeter scale. Hamilton College Collection. To see the original, zoomable image on ArtStor click here.