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Image © National Museums Scotland
View full screenSyenite - a small polished slab - pinkish, coarse-grained, largely composed of alkali feldspar - a with small amount of quartz, plagioclase, hornblende and/or biotite (difficult to distinguish in polished specimen) - original name: Syenites Antiquorum - locality unknown
G.1993.34.109
Unknown
Scott, Harold W. Lectures on Geology. University of Chicago Press, 1966. pg xxviii.