. Bulletin of the British Museum (Natural History), Mineralogy. Fig. 13. Plot of all South-eastern Tract rocks in the system Qz-Ne-Ks. Symbols as on Text-fig. 12. Numbers refer to analyses of Tables 5 and 6. Field of pseudoleucite suite outlined. Field of leucite (L) etc. as on Text-fig. 10. MgO (Wt%). 1 2 3 4 5 6 FeO + Fe2Q3(Wt%) Fig. 14. Plot of MgO against (FeO + Fe203) (weight per cent) for all South-eastern Tract rocks together with ledmorites of the Borralan Complex, and ledmorite dykes of the Assynt area. Symbols as on Text-fig. 12 ; ledmorites, crosses. in thin section, and is only sli
. Bulletin of the British Museum (Natural History), Mineralogy. Fig. 13. Plot of all South-eastern Tract rocks in the system Qz-Ne-Ks. Symbols as on Text-fig. 12. Numbers refer to analyses of Tables 5 and 6. Field of pseudoleucite suite outlined. Field of leucite (L) etc. as on Text-fig. 10. MgO (Wt%). 1 2 3 4 5 6 FeO + Fe2Q3(Wt%) Fig. 14. Plot of MgO against (FeO + Fe203) (weight per cent) for all South-eastern Tract rocks together with ledmorites of the Borralan Complex, and ledmorite dykes of the Assynt area. Symbols as on Text-fig. 12 ; ledmorites, crosses. in thin section, and is only slightly changed towards an andradite syenite. The three analysed rocks representative of the hornblende group (Table V, anals. 14-16) show little variation in terms of silica saturation, but considerable variation in the ratio of soda to potash (Text-fig. 13). They do not differ significantly from the pyroxene group in terms of lime, magnesia and iron (Text-fig. 12).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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