Syenite
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Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations.
Porphyritic syenite 2 52188157706
Syenite from Corsica
Leucocratic variety of nepheline syenite from Sweden (särnaite)
Boulders of syenite near Concord, North Carolina, c. 1910
Sodalite
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Sodalite is a tectosilicate mineral with the formula Na8Cl2, with royal blue varieties widely used as an ornamental gemstone. Although massive sodalite samples are opaque, crystals are usually transpa
Syenite
…Carolina, through Taxahaw, South Carolina, to the Brewer and Edgeworth mine in Chesterfield, South Carolina. Syenite pebbles, containing fluorescent sodalite, were moved from Canada to Michigan by glaciers; these glacial erratic pebbles have been given the trade name "yooperlite". In other parts of the world…
Sodalith Rohstein
Sodalitest