124 F. W. HUTTON. 



Wet-jacket Arm, Fiord Co. — A coarsely crystalline rock com- 

 posed of white felspar and long prisms of hornblende up to an inch 

 in length and a quarter of an inch in breadth ; the two minerals 

 in nearly equal quantity, S.G. 2-95. Section : The felspar is 

 orthoclase in groups of independently oriented crystals from '04 

 to -10 in diameter. The hornblende is brown, strongly pleochroic. 

 There is a little quartz, not visible to the naked eye. Perhaps 

 from a seuregation vein and not a true rock. 



We.^fjjorf — A fine grained greenish-grey rock, the separate 

 ciystals hardly visible to the nuked eye. S.G. 2-768. Section : 

 Composed of felspar and hornblende with abundant apatite. 

 Secondary minerals are chlorite, epidote, pyrites, and magnetite. 

 The felspars are much decomposed and can only occasionally he 

 made out ; they appear to be principally orthoclase with a little 

 plagioclase. They are broad in section and from -02 to -08 in 

 length. The hornblende rarely exceeds -04 ; it is brownish-green 

 in ordinary light, and pleochroic changing from dark blue-green 

 to yellow-brown. The chlorite is blue-green, not pleochroic, and 

 partly isotropic. The epidote is the usual colour, and occurs in 

 veins and in the hornblendes : it is not pleochroic. Occurs near 

 the sea-shore, 16f miles north of Westport. 



2Iackmjs Bluff, Nelsoyi—A fine grained granular rock, greyish- 

 green in colour and often containing veins of epidote. S.G. 2-8G. 

 Section ; Composed of felspar, quartz, and hornblende, with mag- 

 netite in considerable quantity ; there is a little apatite in the 

 quartzes, and occasionally some biotite. Secondary minerals are 

 chlorite, epidote in bands and patches, limonite in small irregular 

 flecks, and magnetite after hornblende. Much of the quartz is 

 also secondary. The quartz is in grains up to -02 in diameter, 

 with minute gas pores not arranged in bands but scattered with 

 tolerable uniformity throughout. The felspars are much altered 

 and often impossible xo determine, but some are orthoclase and some 

 plagioclase : they are from -03 to -12 in length. The hornblende 

 is not more than -03 in length ; it is allotriomorphic and not much 

 cleaved, green in colour and strongly pleochroic ; most of it is 

 altered into a bluish-green pleochroic chlorite. Hochstetter, Kew 

 .Zealand, p. 471. 



Aknroa, Bank^s Peninsula— A rather fine grained pale browisli 

 rock, partly decomposed. Section : Composed of orthoclase, 

 plagioclase, and hornblende witli some quartz and magnetite. 

 Secondary minerals are reddish-brown opacite round the magnetites 

 and in the hornblendes, probably a mixture of haematite and 

 limonite. The quartz is from -01 to -03 in diameter and tiU^ «P 

 interstices Ijetween the felspars. The felspars are from -03 to •!•'> 

 in length. The hornblende goes up to "05 in length ; when fresh 

 it is greenish and pleochroic, changing from blue-green to yellow- 



