JUS 



\M KB illnstr;il ion of tliis (I i Hici i It y we may n-l'er to l,h<! 8O-callod 

 granite Of Kallachuli :.li. 'I'liis is ;i medium Drained 'jranilic rock composed 

 of l.liic.k mica, hornhlende, felspar, mostly showing 1, win laincllation, 

 ipiari/, spline, apatite, xireon and epidote. The hiotitc occurs in hexagonal 

 l,:i,l)lc.s. Section. ;i! ri"hl ;m"l< . to the principal dcavave are eharacl eri/ed 



|,y |, he in..:, I intense dicliroism. l>y alteration I, lie mineral heroines 



;i nd is then lVei|iiently se<;n i" he associated witJi epidote. The hornblende 

 IH green in colour and oocurH Hpa.rin-.dy. It. is quite subordinate to the 

 hiolilc. I ', I spar i:; c)l. nrlesH except when- it, has hecome turhid hy 

 alteration. As a rule it shows multiple twinning. The pla^ioelase is 

 idiomorphic with re;, peel, to the <| 1 1 art/.. The sphene occ.urs in irregular 

 iruiHHCH ; it is plcochroic in reddi:;h hrown and yellowish hrown I. 

 Notwithstanding the ahsence of form the mineral may ho identified with 

 certainty hy it . ln"h refraetion and donhle refraction, by it:; colour, a,nd hy 

 the, eha.rii.cieristie, dispersion (/>^i>) seen in convergent li^lil, in sections 



approzimatdly at righ( angleji to an "|.iir axis, Kehpar is often :.cen to 



penetrate the Sphene in ::i|eh ;, way as to show that it heloli":. to all earlier 

 phase of coii:;olida.tion. It is possihlc, <.f course, that the sphene may he a 

 |, ,, iidomorph after t it,a,niferoiis iron ore, hut there is nothing to surest, this 

 e\ce|.t the ahsence of form and its relation to the felspar. Original : .phe.ne 

 i n "anlod hy llosKNI'.liscil as iMilonxiii.'-; in all cases to the earliest period of 

 crystal hnildin^. A patite occurs ahundaiitly in lon^ thin prisms. It is 

 especially common in the hiotile. Xireon occurs as ininiile irregular grains 

 and as short s!uni|>y |>risms with well marked terminations. The grains 

 ma\ he reco;.|ii/,cd hy their strong refraction and doiihle refraction; 

 the crystals hv these characters, hy their form and hy the. fact, thai 

 their donhle. refraction, as determined hy a ipiartx or selenite, \\-edve, 

 is positive/ 1 ) 



(I, l)r. Sniuiv IlllH Ollllcd Ilitciltion ' M icm r,i|,i,\i] .luiinnil, 1H77) t" Hi"' usr i>f (lie i|ii:nt/ 

 Wdl^i in >lr I iMtflliHllitlK' liol.wci'ii tin 1 tv\" ilil'rrl inns uf c \ I i lid ii Hi i.!' ;iny ilnnlilc I i't'l iii't iujf 

 ;l n.,! i nl ;il i i.'lil, iin^li'M to mi u|it ic iixiM. lie mils fliiw l,\\o (lirccliuiiH (lie positive :nnl 

 lll'^lll.ivi' ll^^'H II Iliuiln n|' Hpcnl<illX' !' Ilirin In \\liirli r\ccpl inn in:iy 1" t:il>i'ii, us Hi, Lini 

 |... iln, :MM! n, -ntivi- JIM' Used willl rcl'cn-nrc In |li.> i Inir.K (cr nf llic l.i.Mi-rl nrrn ;)lir |ir,l. iinrl 



. i . .,IK| iiii'iin lini'M' iii ii liinxiiil rrynliil, unit nlsn \villi ri'fcrcnoo In Ilic clinr ictrr nl' UH< .Inn!,!. 



i. h.n i inn ,.r :in\ orjitel ""i belonglag to the onblo ijTitam, Thfi two direotioni in quAtion mAj 



lir rnnvi'iiiciilly ri-lrrrcil In MM Hi, 111:1 jnr mill Iliilliir livrs nl' ilrpnl.'iri/lllinn. 1C (lie Mrrlinli 

 llllpprllH In In- rill plirillli I In | \vnnf (lie nxi'.snf I lie !! Ii p.sniil tlli'tl (tic Illlljor 1111(1 minor .'IXI'S (if 

 .li'poliiri/.iitinn \\ill nl' rniii . QORQ I ..... 'I xvitli Ilir l.wo nxrs of Ilic rllip.>.niil . II Ilir BOOtloa 

 lie nil pnriillrl Iii niii- of llii'iixi-s of Ilir I'llip oiil I!M n lilhi-r tin nuijnr .,i minor n\is of 

 ilrpnliiri/ation MM Ilir msr mny lir, will <"ie pmiil wil.li this nxis. If Ilir snlinn In- nnl ml 

 plinilli'l In ,'lliy nnr nf Ilir.'iM- ,| I lir , 1 1 1 1 isniil \vr nnly si i 1 1 Hpi II Ii nf Ilir HIM jnr Illlil minor IIXI'S 



nl dtpoluintlon. Adopl.inx 1 Hiis iioiiiriirlnlurr \vr srr Hint Dr. Sonny's pnsilivr iixis is our 

 i, mi., i nxis, anil liis ii(i)cul.ivi< axis jhoiir major axis. 



Now In ilrlrrminr wliirll is II ...... ajnr Mini wliirli is Ilir niiimr axis ill liny ^ivrn srrlinn \vr 



i,-,|inrr n (|iiarl/, ni- Hi-lrnilr wril^-r rut sn as In show N KWTON'.'I sralr of rolimrs from Ilir nnilr.-il 

 Illil c,T lln- In ,1 iinlrr In III. rnlnlllN of ill, Illlli nnl si \ I ll nnlrrs al Irnsl. Till- il irrrl.ions of Ilir 

 111:1 |'H ' anil Ml III. ir II sr M nf Ilir rllip'ir null I ir . I. I , I 1 1 II n. . I ill Ilir Wrll^r. Ill It 1 1 ll.'l ft /. - WCll^C rill, ill 

 Ilir ir mil VVtty I li.'il is willl Ilir lri|..;lh nf I llr wri l^'r p:i ni I Ir I In I lir \ rrl ir.-il avis of Ilir prism 

 Ilir minor a\i>< lir:i parallrl to Ilir lrn;-;lli of lln wril^r. |ji<|, iis lal(r sucll ii. wrdgv. 



Tn nillki' till olisrrv ulinn \vr pluri' Ilir rryslal srrlion ill till' posilinn nf r \liiirl.ion ami Hun 

 DtOn il HimiiKli l.i ; liy Iliis mnin.'i \vc pill il \\illi .',.,-(. nut \ inln Ilir pMilimi nf maximum 



