Enfield, Wa 



itaki G>.— Brownisli-bkck, sub-rcsiuous, sparkling 





:o crystals. Section : A l)rownisli or gi-eeni.sh glass, 



nicro-vcsicuLir 



■, vesicles crowded -001 to -OOo in length. Occasional 



■r;i,yments of ol 



ivine. Hut.ton, Trans. K.Z. Inst., Vol. xix., p. 419. 



Waihno lUo 



,r, Waimale Co.— Greenish-black, dull, with minute 



■vhite CTV.stuls. 



Section : A clear pale tnwn glass, marbled with 



mtches den.e ■ 





Tn:o Brother 



s', rrprrllindsUln /•.—Brown, sub-resinous to dull, 



jontaining itiii 



mte black fragments. Section : A brown -kss, 



iiicro-ves?culiii 



•, ^e.ic•les not crowded, round or oval -OUG to -01 



n lenoUi, c-ont 



ains grains of olivine. Haast, Geology of Canter- 



3ury,p.:n3, ( 



Analy.is). 





'/•,s', Adih/irfnnCo.- Brownish-black, sub-i-esinous. 



5ectioii : A hr 



own glass rather full of crystallites, not \esi<;ular. 



Ca.fh mil. 



>V7/r//n 0>.— Brounish-black, sub-rosinous or dull. 



t^ectiou : A br 



own gloss, dense with (;rystallit(>s, sometimes micro- 



vesicular, tl.e 





Huttoii, Trans 



..'xZ.lurt"'v^-)rxLX.!'p. 402. 



-FELSPATHIO ROCKS. 



PYROXBNITB GROUP. 



tie n a,'es , <_]( u ige t! ik( J shew an obliciue optic axis. It occupies 

 about two thirds of the lock. The bastite is fibrous, brownish- 

 yellow, feeblv pl<o(hioic, changing from pale vellow to brownish- 

 }ellow when the fib, es are parallel to the siiort diagonal of the 

 meol , polan/ition colour^ not brilliant. Forms a dyke in Ser- 



l->rown, strongly pleochroic, 



