ON XUK CRVSTALLINE ROCKS OF THE LIZARD DISTRICT. 



40 



)/ 



LociUities. 



Bal k Qimri*y 



Oadgwith (above Frying Pan).., 



do. , Quarry N! of 



Enys Head, near 



Keunack Cove 



Cam Speniic (quarry W. ol") ... 

 do. shore beneath the same ... 

 Lankidden Cove 





Coverack (by road above village) * 



do. in Cove 



do. Quarrv W. of village . 



Polkerris 



Porthalla (quarry by path)., 

 shore (ordinary) .. 

 do. (at contact) 



do. 

 do. 



do. do. (streaky) 



do. do. (banded) 



Goonhilly Downs Quarry ... j 



do. do. do. * I 



Helston-Coverack road ...J 

 Helston-Lizard road (first out- 

 crop). 



Mullion Cove 



Lower Predannack Quarry 



Ogo-dour Cove (near junction) 



(Jeorge's Cove 



Gew Graze. 

 The Rill.... 



o 

 b 

 •Ji 



Remarks. 



Lawarnick Pit (VV.N.W. of 



Kynauce). 

 Kj-nance Cove 



do. (dyke 

 Steeple "). 

 Holestrow 



of '• the 



Pentreath Beach 



*i? 



* I * 



# I * 



? Red (2). 

 #,Red. 



* iRed. 



* |Black, abundant in this district (2). 

 *• jBlack, caleite or magnesite in veins. 

 » Red (3). 



Red (3, two normal, one more compact). 



Greenish-purple (3, one rather streaky, 

 one with veins as above). 



Red. 



Red (3, two normal, one more compact). 



Dark, much disseminated opacite, ? af- 

 fected by contact. 



Reddish. 



Greenish -purplish. 



Id. 



Id., approaches Mullion type, but more 

 compact. 



Id,, colours more separated. 110 speci- 



Id., colours in bands. j mens. 



Streaky, reddish — a brown hornblende. 



Dark, much white hornblende, a little 

 brown. 



Nearly black, njuch white horn- 

 blende (2). 



Reddish, much white hornblende (4). 



Black, rather compact, streaky, much 



I chrysotile. 

 » (Striped, dark purple-grey, and light 

 greenish-grey; (3), sphene in one 

 specimen. 



Reddish, a little brown hornblende ; 

 (?) trace of felspar. 



Dark, white spots ; felspar or chlori- 

 toid (?). 



Rather dark ; some of the chlorite 

 is probably a bleached biotite. 



Striped reddish-brown and light green- 

 ish-grey. 



Red, compact; ? fluxion structure. 



Greenish-grey, rather decomposed, 



veined with steatitic minerals. 

 Caleite or magnesite veins. 



serpentine more common on parts of the west coast and on the 

 north : while XII. is a variety almost confined to the west coast, 

 rich in small crystals of colourless hornblende; XIII. is from a 

 weathered portion of the same specimen as XII. It was made by 



