Document X8DeK85mbXqN3ejEgM20z4Y0w

' *y \-f 'v.J^:`^..:v - ' "* " `'^ ' ";/ * ;^-v *, *'"V. ->yc-j*. Vir.': '1 ^ -; _ ;.jr^^aSg^5SfflB^^^83S Tempi re Gorge in the Hamer sley Range oarries a north flowing tributary^! ' of the Fortesoue River and lies about 20 miles due south of Jiulga Dowau* ''' " Station* ...... . ' The Hamersley .Range is made up of fiat.dipping.aediaea^. tolonging^tefej^e^ Of ythe^ttll^ij*^^ ^ age*- The rooks exposed in Tampiire Gorge.-eonsist predoainaitly of .`4** sites interbedded with' silioeous or oherty" ironstone*' The deposita.'61 oroeidolite asbestos are everywhere assooiated.with a-banded, lronstbniii^^r,^. whioh is highly silioeous and of a'dark brown color* ;' ' Bands of orooidolite ooour at two horizons in the sedimentary beds*. - V;cvrii.TiiL The lower horizon is close to the base of the 'cliffs of the Gorge, andv.%;,.. oontains a vein of orooidolite averaging about 2-1/2 inohes in thiokness^.;.'1' green massive rook, whioh hy miorosbdpio examination appea'rato have#! composition identical to that of the fibrous orooidolite* This massive rook, whioh weathers to a dark brown oolor, is thought to be identloal . ,*C S with potential oroeidolite, whioh is oommonly associated with the fibrous ?r* variety..in the deposits of the Cape Frovinoe of .Afrioa* The second orooidolit-bearing horizon lies at an elevation of about.' feet above the base of the oliffs, and the orooidolite' here ooours number of narrow parallel veins lying in the .bedding planes of . a. fei quartzite in. an exaotly similar manner to the ..asbestos in the-lower^ In this upper horizon some half dozen veins of ..oroeidoilte.1 varying...ii from one inch to 1/4 or 1/8 of an-inoji "are^dlstributed^^t^roug&^a 'f^^ :,yyquartzite band' overa width of about- five^feeti^the aggregatavthl'om^ orooidolite.being about 4-1/2-inoheSfcv !, v;.^L& Hy examination -did not-inelude-ai-i--tbo^prospebtingr areas-being^wori|c^ but from information supplied to me in bonversation with a number ~di peotors I was able to form the opinion that all the orooidolite ooourredW in a manner similar to that desoribed above* ' A considerable amount of fibre is available in the oliff faoes and Canto won without much diffioulty at the outorop* It is doubtful, however^\^^|:n?'whether the narrow width of the. veins will permit of these- deposits being worked economically by underground methods, owing to the large amount of ;.;', worthless rook material whioh would necessarily have to be removed in re covering the valuable fibre* These deposits are interesting in that they appear to be similar in their . mode of ooourrence to the deposits of blue asbestos or orooidolite, in Africa* The asbestos in the Cape Province of Afrioa is oommonly referred "to as "Cape Blue", and is found in seams interbedded with the beuided ironstone of the lower Griqua Town series of the Transvaal system, whioh is probably the equivalent in age to the upper part of the Nullagine series in Western Australia. These deposits are fully desoribed in Memoir Ho. 12 of the Geological Survey of the Union of South Afrioa. . The conclusion is there arrived at .that .'-the orooidolite is of. sedimentary' origin and has been^-'-. formed by the metamorphism of ferruginous'q.uart*ites,s..whioh are postulated .';. to have had an original oomposition pebuliarly suited'-'to the formation'^' orooidolite-. ; . ;; ' , , fciS.iesfc Althou^^^^ete'raination rof the loh^^^^^^^tionlof:' the^bmlrAe}^^ Range ferruginous quartzites has yet been made, tie striking megasoopiJk resemblanoe^and-mode of ooourrenoe of: the - rooks to > the: above -aentione#^^4^:A|3, published description, suggest that they are similarin allurespeots.:.^^^;.: .' '* v-^ ^ ii; - ^* . ..... - . -- Reference: Annual Progress Report of the .Seolo^wltiur^y-of ithe^f . rv Wsstera V \' .r try turns kmi GXOdfiCUTI BAMilMLir liiai. lOiygy^y pTflAiai Ti|lrt Oarga la tea lutriltf Kanga miiIo a aarte flUg tributary af tea firtiiam Utw m4 llaa about 10 allaa daa aauth af ltl|i Ohm State mu Aa Hanartloy itafi la aada 9 af flat <lyfi^ aattaaali kalaagt^ It tea a>ya> parka af tea MU^bi aarlaa* prsamtely late rra ortataa ago. tea raatra axpaate la Taaylra tey Miajat yriiiilMMly af gaarti tetaa UUrtiliU wlte alllaaaaa ar shsrty iraaatoaa* tea doyateta af araaMalita aakaataa ar* wirytera aaaaalatad with a kite lrmataao white la U#r alUaaoaa ate af a lark km aalar. Bate* af araaMalita oaaar at tea barlaoaa la tea to dlamitty tea. Tha lawar harlton la alaaa to tha baas af tea allffa af tha Oary, ate aaatalaa a fill af araaMalita actaragiag about 1*1/1 iateaa la tefattain ate lylag yarallal to tka tedlif plaaaa af tea farrtglaaaa Iraaatiaa la , telak it aaaura. tea araaldalita 1--tlataly ararllaa a tela had afdarfc grata aaaalva rook, telak hy alaraaaapia awaaiaatlaa tyftara ta kata a eonpoaltlm ldaatloal to teat of tea fibrowa araaldalita. tela aaateww roak* telte aaatkara ta a lark kraaa aalar la tkaogkt ta baldaatiaal with patantlal aroaldollta* telte la ssmonly aaaaaiatte wlte tea flkraaa ariaty la tka dsposlts af tea Gaya frwwiaaa af Aftrlaau r: ;i?$ Tka aaaete aroatdollta-baarlag harlam lias at. aa aiawatiaa af alntW^: faat ahawa tka kcaa of tka allffa* ate tea araaMalita kata amra.laa> .. nutear af aarraw yarallal walaa lying la tea htedtug ylaaaaaf a fmajlifraii taartatta la aa axaatly similar aaaaar ta tka aakaataa la tea laaar hsrtaoa** Ta tela kpir karitoa aom half 4oim walaa af araaMalita wavylng la .rifted frm aaa inahto 1/k ar l/*af aa late ara itatrlkatte tkroagk a fmagllm %wartalta kate avsr a wMte af ikut ftw* faat* tea aggragata tfelaJnaaaaf araaMalita balng akaat hl/2 late>i Hr amattetlaa 414 wot laaltea all tka yrasyaatiag araaa kalag wwrkte* kt fraa lafaraatiaa supylisd ta aa la aaavaraatloa wlte a amkar af yrta paatora I waa akla to fora tha aplaloa that all tha arasldallta oaaurrad la a aaaaar similar to that 4aaarika4 abowa. A aaaa!4artela aaoaat of fihra la awalltela la tea allff faaaa ate aaa ha won wlthowt ante dlfflaalty at tka outarop. It la doubtful* howarar* wkatear tka narrow wMte af tka wwlaa will paralt af thorn dapaalta kalag warkad aaaaaalaally ky utesrgrawte nathads* awing to tha largo aaoaat af worthlaaa roak notarial whlah would naaaaaarlly hawa ta ha rtaowwd la ra* oowwrftng tha valuabla fihra. Tha so dapaalta ara lntorastlBg la that they appaar to ha similar la thalr aada af aaaarraaaa to tea dopealts af klwa aabaataa ar araaldallta* la Afrlaa. Tka ashastos la tha Capa Prowinaa of Afriaa la aeaamly rafsrrad ta aa `Capa Slua". ate la found la aaaaa latsrhaddad with tea batead Ironateaa of tha lawar arietta Town aarlaa of tha Transvaal ayataa* telah la probably tha agslvalaat la ago to tha uppar part of tha Vullaglna aarlaa la Vsstara Australia. Thasa dapaalta ara fully daaaribad la Ifsaalr fa. 12 of tka daalogiaal Surray af tha Vbiaa af Saute Afrlaa. Tka aenalualaa la tksra -`agT-yg yr^-y*-- *. ' W.V' *'*%~' r-. - v--*-r .* <*.v* wrtw4 l tkt tbs oroeidollt* Is of wift--ftwy ri{ta u4 k* ktw fbn Iqr ttt Mtawiykltt of ftn>|ln fMrltitii. obioh oro ihWiM t* km HI rt|lMl MfHltlM ytttlluly dM to tbo fWMllNI 0# mlbiUtt* Altheogfc a* 4otondoolNk of ttt rtWiMl yrttioo of tho tMirrty lug* fkrwilMM foortsitoo too Jffl km Mte, tfeo rMrlTiirg ht|UH||| mHbUaM ai mod* of umrrwn of tte min to tk tkow --irfml . fAIIiM ImmIiIImu ooggoot tkt they oro oUdlor la oil respooto. $7i `s 1 Referenoe: Annual Progress Report of the Seologioal Survey of the State of 'Yestern Australia for the year 1937 STAR T^ COPY BOX NO./FILE DRAWER NO. 3 SIGNIFICANT '"o (jtuAsi' Ag&g, - NOTES OU$L r Vxi^u. yXA^(fe --b INITIALS DATE SEGMENT NO.