Junction of the Granite and the Killas Rocks in Corn'vcaU. 167 



granite near to the hanging or north wall is hard, but nearer 

 to the south wall it becomes more and more decomposed. 

 Several strings of granite start from the main vein into the 

 south wall, and end at a short distance. The north wall of 

 the granite is formed not by the serpentine, but by a vein of 

 steatite two feet and a half wide. The granite of the vein is 

 fine-grained, and of the same description as in the other gra- 

 nite veins. 



VI. Kennick Cove. — On the eastern shore of the Lizard di- 

 strict is situated Kennick Cove, near the village of Gwendra. 

 The prevailing rock is a serpentine of a close texture, of a 

 dark colour, either reddish-brown or black, containing fine 

 diallage in large spots ; in it occur veins of granite, greenstone, 

 and steatite. The vein of compact greenstone appears at the 

 cliffs near (a) fig. 9, and a section of it is represented by fig. 10. 

 This vein is five feet thick, runs 30 degrees west from north, 

 dipping to the north-east with an angle varying between 

 25 and 45 degrees. In both walls of it are found strings of 

 steatite, and a string occurs in the hanging wall, one foot wide, 

 filled with fragments of greenstone cemented by steatite. A 

 very fine vein of steatite occurs not very far from this green- 

 stone vein (fig. 11). It is at the bottom five feet wide, and it 

 may be distinctly seen that it ends at the height of fifteen feet. 

 An earthy grayish substance is found forming both walls of the 

 vein, to the thickness of two inches and a half; it contains a 

 large portion of asbestus, so that the whole takes a fibrous ap- 

 pearance. The steatite in the vein is of a grayish hue, which 

 evidently is derived from a great many little gray spots im- 

 bedded in the mass, in the same manner as the spots of mica 

 in the granite of the veins. This gray steatite is intersected by 

 many strings of a very white steatite. In the dark serpentine 

 forming the country of the vein occur frequently asbestus, cal- 

 careous spar and talc, in little strings. 



No veins are found in the coves (c) and ((/) ; the sand here 

 appears to contain grains of titanium. A considerable mass of 

 greenstone (fig. 12), intersected by strings and irregular masses 

 of granite, occurs near the cliff (i'). The granite and green- 

 stone are intimately joined together ; the strings and veins of 

 granite do not hang together with the walls of greenstone, but 

 the masses of granite are so intimately mixed with the green- 

 stone, that they cannot be separated one from the other. This 

 mass of greenstone and granite appears to be stratified ; the 

 strata run 15 degrees south from east, dipping to the south 

 with an angle of 45 degrees. The serpentine lies undoubtedly 

 below this strange rock. Veins of white steatite occur near 

 the junction of both rocks, whicii are covered by decomposed 



granite, 



