BY W. N. BENSON. 173 



DESCRIPTION OF PLATES XXV. -XXVII. 



Plate XXV. 



Fig. I. — lutersertal Quartz-albite-dolerite{1065); centre of Hanging Rock. 



( X 20), polarised light. 

 Fig.2.— Ophitic and spilitic albite-dolerite(1028); west of Swamp Creek 



Falls. ( X 20). 

 Fig. 3. — Glomero-porphyritic spilite (155) ; Woolomin Series, Munro's 



Creek. ( x 12). 

 Fig.4. — Spilite with basaltic texture(1029); narrow sill in Moonlight Creek. 



(x30). 

 Fig. 5. — Holocrystalline spilite(1055); central part of pillow, Happy Valley. 



( X 20). 

 Fig.6. — Hypocrystallinespilite(1015); narrow sill(?), Munro's Creek. ( x24). 



Plate xxvi. 

 Fig. 7. — Variolite(1025); margin of a pillow. Swamp Creek. ( x 30). 

 Fig.8. — Hypohyaline semi-variolite (1039); outer margin of pillow, Swamp 



Creek. ( x 12). 

 Fig.9.— Variolite with rod-like structures(1034); Munro's Creek. ( x 30). 

 Fig. 10. — Micro-ellipsoidal spilite(1044); margin of pillow, Happy Valley. 



(x30). 

 Fig. 11. — Keratophyre(541); Hanging Rock. ( x 30), polarised light. 

 Fig. 12. — Magnetite-keratophyre(1075); Hyde's Creek. ( x 30). 



Plate xxvii. 

 Fig. 1. — Magnetite-keratophyre( 1 186); Hyde's Creek. ( x g). 

 Fig.2. — Quart z-keratoplu're( 1088); Silver Cully, polarised light. ( x 50). 

 Fig. 3. — Nodular magnelite-keratophyre(1096); Hyde's Creek. (x9). 

 Fig.4. — Magnetite-keratophyre(llOO); Hyde's Creek. ( x 18). 





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