Document yb7MjZmBZzmy0M9wxqw4yaLOn

'\ .....- ANALyStS 01' TALC BY X-RAY DIFFBAcnON AND POLAlUZED LIGHT MICROSCOPY LIlCJ B. McCrou Walter C. McCroae AI.octate., Inc. C1dcqo, Dlmo'- tGalt Ccma:act No. CDC 210-15-0013 .~ U. S. DEPARTMENT OF HEALTH, EDUCATION AND WELFARE pubUe Health sen1ce Center lor IXsu.se CO'Dlrol Natloual IIlat1tute [0:- Ckc:uprttonal Safety and Health ClnebmAtl. Ohio '5221 CAM-19 ~ c~ ElIhIbIt No.. 1.0. ~Rtbt-IIlJII.g-~ IJ.-~B wt~ ,,?nv~r.'I:.__. r::-C _,-..GIU,..C D.'. I" ......~. . . ...SMlrr ""I~ ,*i,~ AJrALYStI or TALC BY X-MY Dll'FRACnON AND POLARIZED UGBT MICROSCOPY 1 '~ ~.,... :).,. May 1C),7 ~ --------~----~ t. Pet."',,, 0............ ~...... A..... Walter C. )tcCroae Allocla,,-. lAc. 2120 S. MlchlpD A. ft. Chlcaco, t.108l1 .. P.,f_., , Of', _.,. N JII. C..er.Ct. l., ~ CDC-2!O-iS-Q063 12. s,." 0 'a.f1 :00....... "44, :-'-&\1o"\al [nst1t1He !~r Occupatlonal Safety and Ue31tb ~6i6 Columbla Pukway CIDctar.atl. OH 452~o I'. ""USCll OD. hundred talc .ampl... bave Mcrza &D&1yzed by polarized ll,ht microscopy. :21:1- penlc:e .tatzWw. x-raJ dUfncttOlllZld, .hell Dec azy, by .;numlton el~tt'oD microscopy &ad electz'oD mIcroprobe. TIM lIJalydCallDedlodi .ere re!llled lJl .cope. lenslth1ty a.cd accuracy u part of the pro1ect. ne lampl.. nqed from 1 to ' " talc vtith an aver'2le of ' " . Tw.tJ-dlr.. oth.r m.lDen1 ere ldntUled IllcludlBc the ,erpeut1nes: antiKt'ntA. llu.rdlte ud cbzyloCile; the amphlb.;l.. : antbophyWte. tremullta &ad actinoUte: the C'3cbon2.tes: calcite. dolomite, werlte IDd m.plta; tbI talc-Uk. miural chlorite u ... ~tl u quartz. mica, reldiS-row. mapetlte, coal, I"ophlta, Lyd~aptlte. cta,.., bycJrOU8 iron olCldu :md rutile. Ch.,.ot11e .... found lD cm1y ODe lample whlch. howe,.er, COIltalne~ only l-Z1 :.:ltc. Mare thaD one-third af the Ilmpl.. caDlalDeci ~aUta or act1DoUta ofteQ lr. t:'::1Jor !lmC'U~lt~ and uwally partly nbrou. '1'IIU report .... lUbmlued In fuUlUmat .,f C~LT:J.ct y", CDC -:1 0- ror13-0063 by Walter C. McCroce "'.octatel, lJ\c. UDder the I~orthlp of the ~:J.t1o,al tDltttut.e Oc:cu t101lal ~ aDd Healdl. _ _ _ _ _ _...... . ~., ,.,4 M Uec_... " 1",0. x' ray diUnctioo dolomite mlcroacopy mqueslta polarized electtoml.lD.tic n,dlat1oa quam talc ulM.to. ampb1bole er,>ent1nel calelt.e """ 14"h.r./O,..E ....4 T..... chlorite mineral. dl.~"loa It&.I.nln, x...ray .ttp .a.m1n, I - - ...,." ......... ". i:''400astD.'' "~11 AIID UJlU.JCO. _JI 61." .. \ !; 57 "".<0___ oc _,e,-,.. n baa bea couidenbl, coatr'o.enr dul'lDl the put f--yean over the com- pMttlOil 01. tala u qed lD COftDet1c talc pro4Jc:ta. At OIl. ttme moat of tIle.e pzodalC:t8 .ere rlported CD coatabl cUl'JIotlt Alt:boucll til... data .erl'hown to be erroueoua It leemed d..tnbt. to .,..mm, & tall. 'mber of raw material talca from n.rtou. mID. to determlDe preclael,. what m.J.nerw are present. One blmdrecl talc lample. haft bee aalyud by' polutztd upt mlcrQlcopy. dlspersion DItC.'&r1..ta1D1DC. x-raJ ~\10D ad. wbeD bJ tru.am1.llolielectrOli m1crollcopJ &lid electron mic:TOprobe. The ~ca1 me~ were retlned In .cope. . . .ltlvtty ID4 &ec:ur&C7 .. a pan c,f tIw project. The lample. rqed tram. 1 to 991 talc With III avenel of 8ft. Twenty-three other lIllD.erall waH ldeutlfled lAcludlDc the rpcUll: a.t1tl&Orlte, Uzardlte acl c~oUlel tba ampb1bol..: aDtbophJl1lt.e. tNmoUte I.Dd actinolite, the cubo_t.-: calcite, dolomite, aubtita ad map_tte; the talc-Uka mineral chlorite .. WIU U quartz. mica, feldapars. m. .dta, coal, p-apbite. hydt'Qxyapat1te, claJII. hydroua lroD axld_ azul mUl.. CIl1'7lOtlle wu found lD oaty em. lample which. bowlyer, QOut&l.a.ed oalyl-ft talc. MOl'l th&Q oue-thlrd of the .ampl,. caata1Ded tnmolite 01" acUIlOUte olta ID major amounts and uaually partlr flbroua. N. report wu .ubmU:ted lD.1blflUmet of Coa.tr&ct No. CDC- Z10-15-OO83 by Walter C. McCt"OIl' Maoelatal. tDc. UDder the lponsorship of tIM National Institute" for Occupatloual WetJ &Dei B-.lth. w 58" Ulmc the teclmlqu. of xr&J dUfra.c:t1oa aDd polartzed Ucht microscopy we bave ualyzed 100 lampl.. of talc powder auppUed by NIOSB. WlaeD noces.ary electrou ml~cop)' and electroQ microprobe 1Ul.yat. hay. beeu \&.led to supplement the data developed by the other tecbnJqu... 'l1le purpoae of the work wu to furuiah NtOSB with the ual,ucal naulta ..blch In taIlnlated In the atta.ched Data SUmmary, (Appcdlx A.) W1d1. 10 dolDC we haYe tried to refbLe the mlcrolcoplcal and x-ray m.th0d8 uled u they appl1 to the a.aaIy.la of talc. METHODS OF ANALYSIS Each sample wu analyzed by x-ray dS.ffnct1oa and mlCl'CMcoPY. The x-ray work . . . doIIe ami. Ph1U~ x-ray laerator aDd dlffractometer. Each sample was ant lCUIled COlltlDlloally to record _ dlffractlOll patt.m reprueutlq the whole sample. Th. m1Deral. ldentl1led were 11Itad aDd my questlol1ahte peak asslgnDlenta were noted, for confirma.tion or resolutlOll by polarized light microscopy 1D.cludlDc dispersion sta ln' o ,. Qumtltle. of each eomp::aent were estimated wheever poIslhl., both by pol&rlzed Ulht microacopy aDd from the continuous leu. . X-ray step leazmJnc wu don" prefenbly after m1Cl'CMcopy, for amphibole and serpeutlDe m1Del'slI md for quartz, III order to detetmlDe my quantitles of these present In the talc. Besultl of the.e thr.. typM of anatysll .ere reconclled with each other aDd tileD combined and presented lD lndh1.dual reports for each s&m",e. X-RAY DIFFRACTION .. Sample prepantlOD. To lDRr. the best x-ray powder dl.ftractloa results the contract specifies that samples lD wldeh the .'Nrace particl. Ilz. exceeda 10 I'm muat be l1"Ound ftner before UDdertaJdnl x-r&1 dlaractiOil &Dalysts. JudlJnev.t of whether Ibe re<Nctlod . . . llec:..sa.ry wu made by determ fnh1l tile p&rttcl. Ilz. dlstrlbution mlcro- lcoplc:a1ly. Th. sample .... Wled u received If the averace particle diameter bu,.... below 10,an. If the averqe particle .... lar,er thu 10 I'm, or if the sample . u not bolDOCeDe0u.8 beaus. it CQlUJned lump8 or particles. a 2-gram pon101l wu mined lD uopropuo\ for about 10 mlIwta lD a McCrone Mlcronizing Mlll and drled by .low .....poratlOll to a free fiowtq powc4er. I1 I' APPENDIX A Data Summ.ry Appendix A 1a a flve page table which summarizes the analytlcal results for each of the 100 lample.. Four methods of quantitatiol1 were used md are ooded. as follows: method x-ray dtffract1a1step sca.rmmg x-ray diffract1ol1 line SClnning L 1I01ar1zed Ught microscopy D 'lb.e method usually used m ftndblg the quantity of a liven mJneral is noted after tbe , sip in the column heading for that mJneral. When a method different \.. from that DOted In the head1ng was used the letter code for that method follows the percentage Hsted in the table for the particular sample. In the cue of tretnolite-actfnoUte 1tCf, fibers" mems the percentage of the total trelXJ.ol1te md/or actmol1te that 1a fibrous, as contrutec:with musive particles. This was, of cours., alway. determ1ned by polarized upt microscopy with the use of dispersion .ta1n1nl'. ... 35 PRODUCT TALC S~~LES FOR LAlORATORY ANALYSIS ,DSHFS Saop1e - Company and Sa=ple Desilnation . Source of I I Sa"!1)le \ Gouverneur Talc Co~par.y (NY) 001 Nytal 300 Supplier Gouverneur talc Company (NY) 002 Nyul 400 Gouvuneur Talc Company (NY) SuppUer I 003 5X Supplier ... ~uverneur Talc Company (NY) 004 325 Supplier Gouverneur Talc Company (NY) 'OOS X i ISupplier , Couverneur Talc Company (NY) 006 F'I' Gouverneur Talc Company (NY) 007 3X I Supplier . Supplier ~ Johnson &Johnson,.Vermont 009 Product Talc (98% Pure) Comoanv 111tche.ot:k Tale. Cotllpany 034 Murphy, N.C., Product Talc. Hat'Vard Windsor Minerals. Gassets "37" 035 July 29. 1975 (Vermont) Harvard Windsor Minerals. West Windsor 036 Mineral Ray Crind Composite, Vermot ~arvard Windsor Minerals. Ludlov "36" 037 July 29-30. 1975 (Vermont) ., I Harvard Windsor Minerals. "Cassetts" 038 36, July 28-30. 1975 (Vermont) Harvard Vermont Talc Co- Bagging Bulk 039 Sample. 7/16/75, 2nd shift. VT ' H -- a-- r-v.ar d \ PRODUCT TAlC SAMPLES FOR LABORATORY ANALYSIS _ _--.. DSHEFS '--._- CCl:;a.:1.Y and S~&-m-p-le Source S~mple ~ Du:'&::atiou . of Satll) I e Vermont Talc Comv~y - B~gginl Bulk Sample, vert~l x:cm 040 9/17/75 1st shift (Vermont) I Harvard I Southern T~lc Co. (Cohutu. mll) ChatS1olorth, G.iL. Product (Powder) 041 Sample Mine I.D. 04-00493 MESA Packer Station '3, Vanderbilt Talc~ Mill 11 Gouverneur, N. Y. . NIOSH .. 042 1st shift 11/4/75 (FT) Survey IP.acker Station '2, Vanderbilt Mill 11 Gouverneur, N.Y Talc, ~nOSH 043 CSytal 100), 1st shift 11/4/75 Surve~ Ceramitalc RDT, Vanderbilt Talc Co. lst shift 11/4/75 (NY) 044 NIOSH Survey i I Bal,ing Station 13, Vanderbilt Talc Co., Kill #1, Gouverneur, N.Y. NIOSH 045 11/4/75 (Nytal 200) Survey Hitchcock Corp. #5 Mine 046 IDI 3100222 rNC) MESA Hitchcock Corp., 13 ~in. 1D'3100683 (NC) 047 NESA Wray Mine & Mill, I~c. Minerals and che~cals 048 IDII 31-0008 (yermont) MESA !l!agg1ng Station. Vandervilt Talc. Co. 2nd shift. Mill II NIOSH 049 Gouverneur, N. Y (Nycal 300) 11/3/7 Survey ts&gll.ng Stacion. Vanderbilt. Znd shift. 11/3/75 (Ny tal 200) NIOSH 050 Mill II, Couveneur, rl. Y. Survey I~outnern Ialc Co., !louctlern Mi.11 ~roduct Talc sample, Chatsworch. Ca 051 ~ock Cltff Mine, ID' 0900492. 9/3/7 ~SA Southern talc Co., Southern Mill. 052 ~hatsworth, Ca. IDU 09-00492 ore from Rock GIlff MESA Southern talc Co., Southern Mill to,053 Ore froa Judge Hole Mine 09-00492 - ~ J,J1ncerboro !1.ina &. Hill. ;1.nterican . - - .054 - ITal c Co.. :Upine. ,u~. line, Ore from (~Iont ---.J.n I~-'T- - - Wi 1 lowe rce~ ID;Ol-OO~33 ~SA f . I PRODUCT TALC SAMPLES FOR LABORATORY ANALYSIS ,- OSHEFS Sample Co~p.ny and Sample Oesignatoion -- _._--..., Source I of Sample 055 Thompson-Weinman Co... Cartersville. Plant. cartersVillea Ca. Ora from Brady Mine, IO~09-0 224 MESA 9/5/74 Cohutta Mill. Southern Talc Co. Chatsworth, Ga. 9/3/74, Ore from 056 Ernest Mine 10109-00493 MESA .American Tale Co.. Upin.. Ga. Winterboro Mine & Mill. 9/S{1S 057 101-00433, Final Prod.Ore fro.Mont MESA non.er Ta-rcCo.fiarren PIt Preel. ... 16. Allamora, Hudapwth Co., taxa. 058 10' 41-00869 MESA Pioneer Talc Co. Inc Apacha Pit Product. #4. Texa. 059 101 41-00869 MESA [Pioneer Ta-rc Co. Inc. t 114 Texola Pit Product, Texas 060 10' 41-00869 ISoutnern Clay Pro<iucts. L'2. MESA Bott01ll Produc.t, Al1atDOre., llud.peth 061 Co., Texas fl18 MESA IMilvhlte Co. Inc., Van Horn, Cumberson Co, Texas ID141-01527 062 Ground Calcined Product MESA Milvlil.te -Co. Inc (HI, Van liorn, Culberson Co. TeX3s,.Eagle Hat 063 . Pit Crude 101141-01527 MESA 1t'l.oneerTalc Co., All-amore, liudspet Co. Texas. 18 Garren Ceramic. 064 101 41-00869 MESA .. Milwhite Co. Inc . Van Horn. Texas 065 114 Tumble Down Pit Product. lDlt 41-01527 ~SA Emtal 42. Eastern ~1agnesia Talc: I 066 Co. Vermont 8/28/75 IHARVARD 067 Pfizer (Barretts ~ll) Montana 'minus 12 micron Of ~nOSH !survey I I ~fizer (Barretts Mill) Montana 068 ~inus 325 mesh ~nOSH ~urvy , ! 1069 ft"izer (Barretts Mill) Moncan.a ~inus 20 microns ~IOSR - ~urv.y P10D~CT TAlC SAMPLES FOR LAEORATORY A.~ALystS DSliEFS S.ullple # 070 071 072 -CO~?:1.y and Su::ple DU!.i:-tioQ .. Cyprus (Three forks Kill) Montana minus 325 lIIesh Cyprus (Three torks Mill) Montana MistI'on Vapor (minus 10 micron) Cyprus (Three Forks Mill) Mont~na Floor Sweepinaa (Ballinl Area) . Source .of Sam..1'.le ! INIOSH Survey I NIOS}! Survey SIOSH Survey ... Cyprus (Yellowstone Mine) Montana Dri~l Hole NIOSK 013 Survey Southern Talc (Southern Mill) Ga. 98% passinl 200 mash NIOS}! 074 Survey Southern Talc (Sou.thern Mill) Ga. 99% p"aain, 325 mash (11767) NIOSH 075 Survey Southern talc (Cohutta Mill) Ga. NIOSH 076 95% passtna 325 mash Survey ISouthe~ talc (Cohutta Mill) Ga. NIosa J 077 25% passinl 200 mesh Survey Milvhite talc Co. Inc. (Tex.) NIOSa 078 Finished CM4 product Survey 1 .... Westex Talc Co. (TDM) 079 Dark -(Milwhite Inc.) .NIOSH Tu. Survey Milwh1te Talc Co. (Iex) 080 Marshel mix - 92-200 mesh NIOSa SUl:Vey Westex Talc Co. (~l1l"'h1te Inc.) (T.x INIOSH 081 ~ite mine 93-200 mesh Survey .Southern Clay P~oducts - Tex 082 ~ar~en Mine 112 ~IOSH Survey Texas Talc Co. - !Pl (Tex.) 083 line (Texas P~cif1c) tUOSH :Survey I 08' ~- - ~exas Talc Co. pavid Mine Tex. NIOSli ~urvey PRooceT TALC SA!'!PLES FOR LABORATORY ANALYSIS DSHEFS , S~ple I 085 CO:r&~y And S~~ple DU1it:u1on Texas Talc: Co. (Tax.} TP2 Mine Cyprus Industrial Mineral. Co. 086 Loyce Fine Mine (Tex.) PIoneer Talc Co. Inc. (Tex.) 087 Texola Mine Pioneer Talc Co, Inc. (Tex.) 088 Oees Mine Milwhite Co. Inc:. Bryant 089 Soapstone Mine Arkansas Source of Sa:t 1e NIOSH. Survey NIOSH Survey NIOSH Survey NIOSS Survey NIOSS Survey Laws Mill (Calif.) . ,NIOSH 090 Clay sample, ~olin + 1% ,lue Survey Laws Mill Micro talc from. 091 ~ite Eagle Mine (Calif) Standard Industrial Minerals NIOSli Survey !Laws Mill (Calif) 092 pesert Talc: Standard Industrial Minerals MIOSH Survey ~&V. Mill (Calif) ~tOSH : 093 . ~S_otla1nd!];r J1incdustrial Minerals Survey I I Keeler T-076 (Cyprus) (Calif) IitOSH 094 Tecopa Mine (100% Pan~nt) ~urvey Keeler HGO-55 Slend (Cyprus) (Cal) ~nOSH 09.5 4 Panamint, 3 Oaets, 3 White Eagle ~urvey K.eeler Sierra Cloud Blend (Cyprus) ~lIQSH 096 tcIrf/fint. 1 White Eagle ~urvey 097 Keeler. MSC Panamint + Hi.t 0.5% roa (CY stearite Prus)(0C, alif ~IOSll Survey Keeler SierraU.te (Cyprus)(CaUf INIOSH 098 Talc City (Frisco) - Survey 1 Keeler GlaCier 200 (Cyprus)(Cal1f IN10::iH Talc City (Tailings) P99 .-- ___ .-... Survey -- ..... PRODUCT TALC SAMPLES FOR LABORATORY ANALYSIS - .... DSHEFS 5a.::p I e # 100 - Cc=?a.:.Y &!\d S~ple Du1.~&t1on Keeler USP (CypruS)(Ca11f) Oasis Mine (100%) 50ul:ce of S&1II1)1e t I NIOSR Survey Keeler (Calif) (Cyprus) 101 White Eagle Sereeninls NIOSH Survey Keeler (Calif) (Cyprus) NIOSH .. 102 Suggar Mine . Survey Pfizer (Cal) Talcron CP 44-31 NIOS~ 103 Eclipse, Bonnie, Mongolian Survey Pfi%er (Cal) CercTon CF 96-38 NIOSH 104 Eclipse, Acme, Mongolian Survey Pfizer cercron CF 96-36 (Cal!f) NIOSH lOS White Eagle, Mongolian, Apex Survey Cyprus (LA) Furnace Creek (Calif) NIOSH 106 Tecopa (100% Panamint) Survey Cyprus (LA) Vanderbilt crude 107 Soft LB (Calif) NIOSH Survey 108 ~erican Talc (Alabama) 84 Color Dark 200 Mesh o~e f~o~ Willow Creek Mine in ~fon~. ~nosa Survey , American Talc (Alai.>aDla) 92 Color ~IOSH ; 109 99\ 400 t-Iesh ore from l\,Ulor Creek ~l,f;n .. in ~fnn~ Survey Ludlow Gassetta Mill (Vermont) 110 Yindsor Minerals Product III 112 I 113 114 Yest ~indsor Kill (Vermont) ~indsor Minerals Product West Windsor ~ill (Vermont) Hammondsville Mine ., ~indsor ~1nerals Vermont Talc Company (Vermont) Chester ~111 - Vertal 77 Vermont Composite Sample Morecown, Vermone - Dr.Froines ,aODUCt TALC SAMPLES FOR LABORATORY ANALYSIS DSlU:FS SA!iPLE ~ llS COMPANY A.~ SAMPLE DESICNATION R. T. Vanderbift (NY) Mouldene . . 116 Resubmittal of 1071 SOURCE OF SAMPLE Company U7 Resubmittal of 1089 - -U8 Resubmittal of 1098 . . R. T. Vanderbil~ (NY) 119 Fibenal 1 . Company R.T. Vanderbilt (NY) 120 Fibertal 6 . R. T. Vanderbilt (NY) 121 Fibertal 12 Company Company California Mine no longer in 122 operation MESA 6Western Talc (California 123 (R.T. Vanderb11t) WESA I 10401138 ~IESA AEWrmuinset~neecrrab.noroTw~aTtl-Y1cilneCeo re rom 11 ow !/rSAMeel'1r41n~.PelnI.rieDmA'O1alInar-y. 0043 124 Alder. Montana IMESA 125 Geor&ia t-tine no longer in operatior ~IES'\ L- ,...- .. ........~ ~.... ~ ! I a I .."" !t;~ ~0 ~ Co ~ ! , .. .8 I I ! ! .t.. : I ! I ! J ~ .. .. . .." :s ~ !! 1& ~ ~, ct ~ :: ... i ~"" ~il ,.. _I , I! I , 1.! I .c".". ~ a ,,~,.. - . . ..... ~ .. s ::: -- ... tt . .."$. ~ -.- - . . -..\ II<.. .,... ~ , -'" "- '~" t ~ ,.. ~ .,.... E" .1 ;:-~ ... ., .... .-. '" ... I- -- ...,., .,... ,. - .. .. - t - .t ~ i -.. ".-. .- ff-a~t I~ ~ ~ '" ~ ~ ...t ,. f ~ I M , t #to s:a 3t ,.. . ;. , .. 1. l .. ..... : I f ,.. ~~ ,-:. : ,.. : ,.. , ~ - :; . - ..... - ! . :.. : ; ., ~":r.. -to- I...if"~~ , ,.. ~! ~r- ,.t --Q J.. ~~ .... ' ..... ~-~ ~ ....... '-' .... : 1. _._ ._ i . . .- ... ! ., -;..-.!- _ _-" _0 ~ - --... L. I :1 ; ..! .' ! ' .-l...:' l i t. f - ~ : . , "; , , ..... I, I '" ~I . .. t i ... .. I..' 'tt ~t - ......~ ~ - - -.. .~ ...;. ,- .1 I .... , .I .- - t ...... ,~ :~. . II<.. ! , i ~ .- ~ '- : : . '- . -.- ....... .. . , ~ --- 1 ., -~ - .. .. - L , -_. -_ . !. . .. -: -..... ..! ..i . t_o ... - -I .' l-t'! ~ lli l~ ;:"1 a-,~. ! ! ~~ .. . ..--_. -, a ,.a .,... . -'" '"ColI 1'0 I"" ,.. ~~ ~ ~ ,A 1\" ~ ~ ~~~ '" t:... ,..~.... ~ i; I. ~ ,' - ~ =~ .. ... . , .. .""t I .. - ~ I .. I. I.. ..~ ....... c. ~r....... .~c.I.:.. ~ ~ . .... ~ ~~ t~ ~~ :a t ~ : ... .:.. ~ r+ ~ n\1 _Illj~ . - i ,= i~i~t t ! I I f 1I --I 'l,! 'it, ~rI ~ : .. i . 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